Genesis Reef Renew System review - automatic water changer

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Last year I helped a friend build the reef system he has always wanted. When we sat down to figure out what he wanted it was pretty simple - a 180 in the basement and a 240 upstairs, oh and it should pretty much run itself. There were a lot more items on the list, but you get the idea - he wanted to spend his time enjoying the system and not maintaining it.

Water changes were a big item - they should be made as easy as possible. So i discovered Genesis Reef Systems and a fellow named Kevin. His flagship product is the Genesis Renew system - a dedicated system made to change water for you while you work, sleep and enjoy your tank.

The concept is to change one gallon of water at a time over a duration of fast as possible, a day, or a week. The idea of continuous water changes has been around for a while and is discussed in this article by Randy: Water Changes in Reef Aquaria by Randy Holmes-Farley - Reefkeeping.com In this article he estimates that a continuous water change of 30% matches a batch change of 26% with the benefit that the introduction of changed water is more gently on the life in the tank. The gently exchange of water also has the perk of not having to heat the water (at least not for my friends 450 gallon system and my 250 system) - with a gallon at a time the water temp doesn't budge.

After some conversations with Kevin we decided to give the renew pro system a try. We also got the storm, I'll do that review another time, also a great piece of equipment. I unfortunately don't have one so i need to go over to my friends house for pictures

The unit showed up well packaged with lengthy, but comprehensive instructions. To scale templates were included to make mounting things easier. everything was labeled making plugging things in straight forward.

The head unit has a solid feel to it with good quality buttons which provide a great response.

There are two metering reservoirs used to measure 1 gallon of water each - one old tank water, and one fresh mix. The reservoirs are well made and have a removable top allowing access to the internal float switches.

The system included two pumps, which for this application were tailored to have one larger pump (discussed later).

The float switch brackets are pure genius - a cube with a sliding plate which doubles as a bracket or a float switch holder. The best part is the "extension" used can be replaced with standard 1/2" PVC which makes placing floats in large reservoirs much easier.

summary: the system has been running EXTREMELY well for about 8-10 months or so. There was a firmware update which Kevin applied for free that resolved a couple small issues which you would need to work hard to make happen. From day on Kevin at Genesis has been FANTASTIC - he answers e-mail very quickly, answers the phone for questions, an is always courteous. After using this i can't imagine any other way - this just works. no calibrating pumps to match - it just works. The system has been rock stable - no crashes or anything of the sort.

Earlier this year I had to work 14 hours a day 7 days a week for over a moth - if it wasn't for the renew i probably wouldn't have done any water changes out of pure exhaustion.

The Pro system (all the bells and whistles) including pumps is $499 - after using this I must say it is worth every penny!

Changes I would like to see:

The system monitors the levels of the holding containers, it would be great to have an output to connect to an RKE or APEX to let me know. My RKE text messages me if anything happens - it would be great to have this connected. I would say the price, but honestly it has been worth every penny and the build quality is fantastic.

*** note the pictures are from my system, after seeing my buddy's in action I had to have one!

head unit:

green button - select between continuous (water change the selected amount back to back until complete), one day period, or one week period - it does the math for you and spreads out the water changes.

yellow button - has LEDs around it providing status of the water change. the button can be used to suspend or cancel the water change

screen with gallons to change - use the up and down buttons to select the number of gallons from 1-99

lower left - sump status - indicates the water level in the sump along with the dual float switches in the old water metering reservoir.

lower right - replacement status - indicates the water level in the replacement water holder along with the dual float switches in the replacement water metering reservoir

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all the ports are nicely labeled:
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metering reservoirs - two identical units.

there are three hose connections - one pushes water into the reservoir, one drain for when the reservoir is full, and one to drain the bucket to it's destination. The overflow tube should run back to where the reservoir is being filled from.

dsc2711001800.jpg


The pro model has two float switches on the inside.
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with back cover removed:
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float switch brackets:

these are harder to describe. the picture below shows one assembled and one in pieces. The picture afterwards shows how you can mount them to each other (great way to mount dual ATO switches!)

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pumps:

Genesis use ehiem and quite one pumps - both my friend and I have the quiteone pumps and i have been very happy with them. They work well, are quite, start reliably, include hose barbs, and are easy to clean (no tools)

dsc2733006800.jpg
 
setup:

gravity is your friend. the reservoirs have a drain line, one goes to your sump, the other down the drain (or directly to the plumbing). The key is to have the reservoirs higher than where they are going. In the case of both system i put this on I had to cross over a room, for this i mounted the respective reservoir onto a ceiling joist so that it could drain to the other side of the room - to do this you need a larger pump than the standard pump with the unit. If you decide to try this (over the ceiling) yourself you will need to order an extension for the wire going to the reservoir.

here is a picture (straight from the genesis site):

setupf.jpg


templates:

dsc2717003800.jpg


When i first set this up on my tank I had both reservoirs mounted to a wooden backer which I anchored to the concrete wall. excuse the power strip, I was eager to get things running and didn't have time to run electric. The reservoir shown is the pre-mix with a float switch letting the renew system know if there is water left. notice the 1/2" PVC allowing the float switch to go where it needs to be:

dsc2747008800.jpg

dsc2748009800.jpg


A while later I moved the drain reservoir into the ceiling (thank the original builder for the wiring mess up there):

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The pre-mix had a powerhead added along with a pump allowing me to direct transfer pre-mix into the sump for when i siphon clean the sand bed. There is a also a heater which I only use when I'm refilling after siphoning the sand bed. The large tube going in is how I transfer from the mixing reservoir on the opposite side of the room into the premix holding reservoir. The tube going across is the ATO. This is the messiest part of my system, partly because I had nowhere to fit it other than in-between the water heater and furnace and there is a just a lot going on there.

dsc5614012800.jpg


Here is the sump with the float switches on the genesis brackets. the Renew with is towards the back, the front is the future home of a safety that shuts the return pump down for 5 minutes if the water level is too low.

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My experience has been great. I attribute part of my reefing success to making water changes easy.

happy reefing!
 
Thats really cool. I didn't know this product was out there.
 
Thanks for the great review!

CJ
 
I have a hard time trusting a piece of electronics to do a water change, I can imagine so much going wrong but I have heard nothing but good things about this system.
 
I have a hard time trusting a piece of electronics to do a water change, I can imagine so much going wrong but I have heard nothing but good things about this system.

It has been rock solid. I only wish some of my other electronics were this good!
 
Great review!
 
I have had a hard time depending on pumps to have matched outputs for automatic water changes for sure. It is very hard to get a pump to match outputs.

Just looking at the design of this system it really is well thought out. This has more safety precautions than I have which is kinda cool. Being float switch driven there is still the chance of switch failure, but as long as they remain clean they are usually ok. When I have a larger system and the room for a mixed saltwater bucket around I will be definately looking into this again.

I would have to say this is the coolest system I have seen in a very long time.
 
Sounds like a great item for anyone NOW if they have a remote sump ... but for those of us with sumps in the stand, and the stand is already packed with stuff, I don't think it offers much relief. But when I set up my next tank, wow !
 
setup:

gravity is your friend. the reservoirs have a drain line, one goes to your sump, the other down the drain (or directly to the plumbing). The key is to have the reservoirs higher than where they are going. In the case of both system i put this on I had to cross over a room, for this i mounted the respective reservoir onto a ceiling joist so that it could drain to the other side of the room - to do this you need a larger pump than the standard pump with the unit. If you decide to try this (over the ceiling) yourself you will need to order an extension for the wire going to the reservoir.

here is a picture (straight from the genesis site):

setupf.jpg


templates:

dsc2717003800.jpg


When i first set this up on my tank I had both reservoirs mounted to a wooden backer which I anchored to the concrete wall. excuse the power strip, I was eager to get things running and didn't have time to run electric. The reservoir shown is the pre-mix with a float switch letting the renew system know if there is water left. notice the 1/2" PVC allowing the float switch to go where it needs to be:

dsc2747008800.jpg

dsc2748009800.jpg


A while later I moved the drain reservoir into the ceiling (thank the original builder for the wiring mess up there):

dsc5612011800.jpg


The pre-mix had a powerhead added along with a pump allowing me to direct transfer pre-mix into the sump for when i siphon clean the sand bed. There is a also a heater which I only use when I'm refilling after siphoning the sand bed. The large tube going in is how I transfer from the mixing reservoir on the opposite side of the room into the premix holding reservoir. The tube going across is the ATO. This is the messiest part of my system, partly because I had nowhere to fit it other than in-between the water heater and furnace and there is a just a lot going on there.

dsc5614012800.jpg


Here is the sump with the float switches on the genesis brackets. the Renew with is towards the back, the front is the future home of a safety that shuts the return pump down for 5 minutes if the water level is too low.

dsc5617013800.jpg


My experience has been great. I attribute part of my reefing success to making water changes easy.

happy reefing!

Do you have to turn off your main return pump and system to perform AWC's when using the Genesis Reef Renew vs the Neptune DOS System where it pulls the water out and puts it back in at the same time?
 
Do you have to turn off your main return pump and system to perform AWC's when using the Genesis Reef Renew vs the Neptune DOS System where it pulls the water out and puts it back in at the same time?

I believe the answer is no as it takes a gallon from the sump to a reservoir and dumps a diff reservoir into the sump so as long as you have a gallon play in your sump ( lowest point of water in the system ) it happens all within 1 minute and the renew and storm talk so ATO doesn't activate during this window
 
This looks cool someone could probably use breakout boxes on an apex and a couple of 5 gal buckets to recreate this function on the apex. I personally can afford to tinker with this stuff at this point but my imagination is running 1000 mph lol
 
How is the system running today?
Did you have to replace the float switches for maintenance?
 

IF YOU HAD TO TAKE A REEFING EXAM, WOULD YOU PASS?

  • Yes!

    Votes: 32 45.7%
  • Not yet, but I have one that I want to buy in mind!

    Votes: 9 12.9%
  • No.

    Votes: 26 37.1%
  • Other (please explain).

    Votes: 3 4.3%

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