Possible precipitation problem

reefer_madness_01

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Hi all, thanks in advance for any help you can provide
I have a 150 gallon tank that has been set up about 3 years and overall has done well. About 6 months ago I started more aggressively feeding and stimulating my corals with Red sea reef energy A and B, reef chili, Fuel, etc and have noticed a marked improvement in growth and color in almost all my corals. I use BRS calcium chloride and soda ash 2 part solutions. Prior to this change in my routine, I was using about 80-120 ml per day of each solution but over the past several months have noticed a marked increase in my consumption of both solutions to where I am using between 400-500 mL per day of each.
I certainly expected an increase but not to this extent. I'm noticing it becoming more and more difficult to get my calcium up to my preferred range of 430-450 and my alk to 9 dKh. During this time, I have definitely noticed more calcified crap in my sump and on my pumps. The sponge dividing the chambers in my sump is like a brick and I'm having to give pumps vinegar baths every couple of months as well as removing all the stuff from my sump to scrap everything out. My carbon reactor clogs up within a couple weeks and the carbon granules turns whitish/grey.

My dosers are programmed to alternate dosing every half an hour using apex program and BRS dosing pumps. The fluid drips in the rapidly moving water coming from my skimmer. My magnesium has been relatively stable throughout all this without dosing (1300ish) and pH is between 8 and 8.2

Clearly, I think there is precipitation going on but my question is whether this is normal in a rapidly growing/thriving tank or whether I am doing something wrong? Is there anything I can do to prevent it or slow it down? It is becoming a maintenance headache. Am I doing something wrong?
 
Nah, totally different issue, different tank, different time frame and circumstances. Ive also used different test kits and confirmed numbers with lfs.
 
Wow thats crazyy ur mag is obviously in check , there deff could be precipition, maybe everything in ur tank is litterally drinking a can of soda everyday but 500 ml damnnnn
 
I too am concerned there may be a testing error, but some folks do get into cycles where precipitation starts and is hard to stop with constant dosing.

What happens to calcium and alkalintiy over , say, a week, if you drop back to 150 ml per day of each?

Letting the alk decline from 9 to 7 dKH will slow the precipitation and might break the cycle, while still being fine for corals.
 
Seen somewere almost same thread that the most precipitation would effect up to 2 percent change in you calc nd alk levels

Well, there's nothing special about 2%. :)

Precipitation generally won't take alkalinity below about 6 dKH, but if it is starting at 21 dKH, that could be a big drop. :)
 
Lolol oh man but from him jumping double the dosing it has to be a test flaw, unless his brs 2 part is wayy wayy off , theres something about brs 2 part that litterally clogs alll my pumps skimmer sponges all withen a 2 month period
 
Brs would litterally distroy everything in my tanks from the amount of buildup in such a short period of time ,I used almost double the ml for brs then esv and wound up bein almost the same amount of money in the longrun, unless you go the randy route =)
 
Lolol oh man but from him jumping double the dosing it has to be a test flaw, unless his brs 2 part is wayy wayy off , theres something about brs 2 part that litterally clogs alll my pumps skimmer sponges all withen a 2 month period

Maybe you are adding it too fast.

You can also use baking soda (sodium bicarbonate) instead of washing soda (sodium carbonate). It is much less prone to precipitation because the tank pH will be a bit lower (a rise of 0.3 pH units is equivalent to doubling either the calcium or alkalinity in terms of likelihood of precipitation). :)
 
I too am concerned there may be a testing error, but some folks do get into cycles where precipitation starts and is hard to stop with constant dosing.

What happens to calcium and alkalintiy over , say, a week, if you drop back to 150 ml per day of each?

Letting the alk decline from 9 to 7 dKH will slow the precipitation and might break the cycle, while still being fine for corals.

I'm pretty confident it isn't a testing issue.
Do you agree that abnormal precipitation is going on? i.e. is this an abnormal amount of dosing and buildup of precipitate in an otherwise thriving tank?
If you think it will be safe, I'll turn down my pumps and see what happens. Also, are you saying I should leave alk at 7 permanently or just drop it down for a bit to break the cycle? I just dont want anything to crash....
Should I switch from BRS soda ash (calcium carbonate) to BRS calcium bicarbonate?
Would switching altogether to calcium reactor help?
Any other ideas or thoughts are appreciated
Thank
 
I'm pretty confident it isn't a testing issue.
Do you agree that abnormal precipitation is going on? i.e. is this an abnormal amount of dosing and buildup of precipitate in an otherwise thriving tank?
If you think it will be safe, I'll turn down my pumps and see what happens. Also, are you saying I should leave alk at 7 permanently or just drop it down for a bit to break the cycle? I just dont want anything to crash....
Should I switch from BRS soda ash (calcium carbonate) to BRS calcium bicarbonate?
Would switching altogether to calcium reactor help?
Any other ideas or thoughts are appreciated
Thank

Can you calculate for us how much that is each day in dKH? That way we can determine if it it above the norm, but that still doesn't mean that precipitation isn't a problem. :)

Lowering pH does seem to help.
 
According to my best estimate using that calculator, daily dKH addition is 3.3 dKH (i.e. dKH would drop from 10.3 to 7) and calcium is about 30 ppm (i.e. calcium would drop from 450 to 420
 
3.3 dKH per day is not particularly above the norm for a tank with growing hard corals and coralline algae.

So you may have a precipitation issue, and that may be worth solving, but 3.3 dKH is not especially excessive, IMO. It may drop some, however, with stopped precipitation.

You might switch to baking soda, at least temporarily, although if corals are good, I might not do it.
 
Ok well that is good to know. My understanding is that some degree of precipitation is inevitable which is why pumps and hoses and skimmers etc need occasional vinegar baths. I guess Im trying to figure out if the amount of precipitation occuring in my tank is abnormal and how to minimize it or "reset" it so that it stops happening. As mentioned in my original post, I think there is probably too much going on since my return pump gets coated with a thin layer of precipitate over a few weeks, my carbon granules turn greyish white and stick together after a couple weeks and the filter sponge separating my compartments in my sump is like a brick after a few months. Is this normal?
 
FYI, here is my tank as of yesterday =)
20150913_164757.jpg
20150913_164839.jpg
 

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