Lowering phosphate

[TTTony]

I’ve got w 95 wave gallon set up for about 6 years now in Georgia , fully packed with LPS some crusting corals bubbles and hammers, giant green softies, a bunch of growing red digiti, and a few anemones

quite a few fish an original yellow tang , 1 powder brown, ,2 chromis, 1 bangaii cardnal, 3 blue eyed anthias,, 3 snow clowns , 2 small black clowns , 1 flame, 1 coral beauty

just can’t seem to get the phosphate down. I used to have more growth before I added the Apex and the filter socks, and the radions.
Everything is healthy, ALK is stable and dosed , but just not growing to the point of making new coral heads.
Besides the chemical that kills yellow TANGS anything else?

I do 15 water gallon changes once a month don’t have much room for a GFO reactor, but I’m probably gonna add one

 

[TTTony]

 

[msnajkowski]

Maybe increase the frequency of your water changes. Maybe 15 gallons every 2 weeks.

 

[shanepike]

What is your phosphate level? And have you double-checked it with another source (like having your LFS test it)?

 

[TheSeaMonster]

I use phosphate-e to lower it I try to under dose because it messes with my ALK

 

[Swank1987]

I have the same questions @shanepike. What are your levels and what are you testing with? Also they do make pretty small reactors for GFO both internal and external.

IMO GFO is the easiest and safest way to lower phosphates. Can you lower the amount you feed? Also, check your RODI to make sure phosphates aren’t sneaking in from your RODI water.