Need your help again please before it's too late!

[Bhun456]

My two cents.

Ive been keeping sps for a while with the same results you are getting. In December of last year I upgraded my lighting to led. Lost a few more corals. Then I got fed up, and stopped testing, grew some algae, bought a powder brown tang. Meanwhile I started to notice my corals coloring up.

I think I was running nutrients too low, when I changed lights the corals tried to grow but did not have enough food. Try to raise your nutrients a bit and see how they respond. It may a month to see some results.

OK I just pulled the gfo last night and I've still got a lot of algae in my tank and like 99.9% sure I have pretty high phosphate levels guessing anyway, I'm really torn between what to do between running small amounts GFO or not running any and risking my corals die due to super high phosphate levels. Have no idea what to do!!!

 

[Bhun456]

What p04 test are you using? If your truly at 0 that's some if not most of the problem imo. That combined with blasting them with 5x (guess) light is too much for them to handle. The light could be the reason for bleaching but the light colors along with rtn leads me to believe it's the lack of nutrients also.

I'd follow what was stated above make sure you raise your lights back up and you may need to cut back on your photo period for a while and slowly bring it up to where you were. You made a lot of changes to the chemistry and light on the tank in a short period of time and the corals need to adapt and have some nutrients to do it. Just my opinion but I would drop the gfo for a bit and cut my photo period and slowly acclimate it all back. Going from high p04 to 0 is detrimental to sensitive sps and coral in general.

Due to all the new algae growth I'm still experiencing I really think its a false 0 and its still up there a little. Do you think I should leave gfo out and just let the algae grow a little an just continue to skim and do my weekly WC's? The algae I'm experiencing is like a green film thats lime green on the glass and covering some LR. Thanks for your help!!!

 

[Bhun456]

Well phosphates must be pretty high because within 48 hours of removing the gfo I've already got a lot of new algae growth and its spreading to places it wasn't in before like on the frag disks too.

 

[Bhun456]

So I just put some gfo & carbon mix into an aqua clear 70 and going to let it run slowly.