Tank to clean ?

[jonnyu]

Okay well my tank is doing great water quality wise. 0 phosphate 5 or less nitrates calcium 440 alk 8.5 ph 7.8-7.9
I am using auto water changes. So going through 50 gallons every 3 weeks. It just seems like corals are not growing or if they are they are doing so in a very slow rate. is there something I am missing?

 

[brians4671]

How large is your tank? 50 gallons every 3 weeks sounds like a lot

 

[jonnyu]

180 with 60 gallon sump

 

[AquamanE]

Much more involved than water quality, although it is extremely important. STABILITY is key. Make sure ALK is stable at all times!!!!

30% water changes is plenty. I think you might be exceeding that (but doubt that would hurt.)

other factors, lighting, and flow. I know you went to the dark side, LED's.

 

[jonnyu]

Much more involved than water quality, although it is extremely important. STABILITY is key. Make sure ALK is stable at all times!!!!

30% water changes is plenty. I think you might be exceeding that (but doubt that would hurt.)

other factors, lighting, and flow. I know you went to the dark side, LED's.

Well I am dosing so it stays pretty stable. I am going to slow water chages. Now flow I have dc12000 for return pump and two rw-15 so I am guessing 6000 to 7000 gph flow. Now for being on the dark side if I had to do it again I would do mh and led combo. I have 102 3w led's. I see Biggar tank and it makes me think led do work great just have not been working on my 180

 

[reefsahoy]

How old is the setup and what type of corals?