Newb 175 Reef Build

Crustoceous

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I've been researching for a while now and I'm in the planning/purchasing stage of putting together at 175 gallon reef tank (60x30x24) with a 75 gallon sump/refugium. I want to sanity check everything that I'm planning so far to make sure I'm not missing something crucial.

My end goal is to have a mixed reef tank in a few years built as function over form - with the exception of some fancy fish, namely a reef safe eel, maybe a lion. I know there are a million opinions out there on everything, so I'm sure I'll get some about not ever having either of those species in a reef tank, and I plan to be careful and only put those "with caution" species in at the right time when the tank can support, no one will be small enough to get eaten, etc. I plan on not going overboard on fish - I want them to have as much room as possible and will be very careful in choosing those that won't outgrow the tank.

Right now I would like feedback on the total setup of the system, if you guys would be so kind.

My plan right now is for the 175 DT with about 1lb/gal of reef saver dry rock stacked to maximize hideaways. I want a shallow sand bed or no sand bed, haven't decided yet. The sump is a 75 gallon aqueon tank, the one for $99 right now at Petco. I'm going to set it up with at least half of it as the refugium, deep fine sand bed with chaeto. Return chamber in the middle, with a skimmer on the other side in its own chamber (I'm aware of the requirements for constant water level and a good area for the return so the water level doesn't constantly change). Building my own overly redundantly safe ATO system, namely because I have an automated home brewery set up already that I'm going to use the existing software to program the ATO. Also incorporating a semi-auto water change system that I can run on command for a particular volume, all controlled through that software.

For the sump, I plan on plumbing the overflow return to run to both sides of the sump, one end to feed the fuge and one to feed the skimmer, and plan on tuning each flow with gates, and the return in the middle. I want to make the fuge chamber wall near the top of the tank, with a rough screen to hold back the macroalgae but let pods through to be sent back to the tank once it's well established.

Display tank will have two xf350 gyres, and the return pump is a sicce syncra sdc 6.0. Skimmer is a skimz sv227. Lighting will be slowly upgraded to three kessil tuna blue's, as the corals demand. Also plan on dosing once that becomes a requirement.

On the sand bed - I am bouncing between bare bottom and shallow in the display tank, and I'm leaning toward having a shallow one to allow for a wrasse and/or goby.

The main thing I want to make sure of is functionality - I want to create as much of an ecosystem as I can, and get to the point of less maintenance/intervention from achieving a symbiotic system. Function-driven clean up crew, fish, etc.

Thoughts?
 
First off, welcome to the hobby! When it comes to more predatory fish, you will likely run into two issues given what you described 1) they don’t work well in a mixed reef for numerous reasons, mainly waste generation, and 2) your tank really isn’t big enough for most predatory fish. However, it is a great size for a mixed reef! Below are my thoughts.

The reef saver rock is a good choice and is what i will be getting for my current build. I’ve seen it at my LFS but already had a tank going at that time.

Sump: I would see about a shallower tank. I own a 75 and a tank that tall would make it very hard towork in the sump, leading to you not doing maintenance.

Avoid the sand in the refugium. The cheato does best when allowed to tumble (speaking from experience).

I would run my drains to the skimmer section only instead of splitting them. I supplied my refugium from my return pump manifold instead as the pump had plenty of extra capacity I wasn’t using.

Good Luck.
 
Thanks for the tips! I was thinking for the sump/fuge I won't have it underneath the tank... I'm placing the tank on the opposite side of the mechanical room in my basement, so I can plumb straight through the wall to the unfinished portion of my basement. That way I can have it easily accessed with no overhead obstacles.

As far as the sand in the refugium... my thought was to have a tall enough area of free water (so 5" of sand on the bottom, and the other 15 inches or so of free water space for the chaeto to tumble. It should be about half the width of the tank at least, so roughly a 40 gallon refugium. Might be more. With that in mind will the sand still be an issue? If so... would a solid biomedia plate be better? The thought is to get the denitrification benefits of a deep sand colony and have a good pod population to send to the tank.
 
The problem with what you described is that the sand becomes a debris trap. Instead, keep the refugium bare bottom so you can vacuum the detritus out during water changes. A bio block type media depends on your goal/use. I learned the hard way that combining things in this hobby (DSB and fuge) compromises both. Cheato is a phosphate/nitrate remover with the bonus of pods. A DSB only does nitrates. Research Remote Deep Sand Bed by Anthony Calfo. His concept of a 5G bucket of sand for nitrate and only nitrate removal is old school but effective. Just make sure to understand why he does high flow in the dark.
 
I see. So really a sand bed might be slightly redundant to a good big macroalgae colony. I suppose a good time to go that route and/or the bio media is if I find my system can’t keep up with the bioload?
 

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

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