Will sps lose color? A majority of my sps lost color because I moved my lights about 4 inches higher for almost a week.

I had a algae outbreak at the beginning of summer gha and others all at once it took about 1.5 kg of rowa and a 3 day black out. Jason 3-4 weeks of rowa will not get rid of it I actually found it got a bit worse at first. I have been changing out 300grams plus every 2 weeks of rowa. Finally 3 months later it's 98% gone.

Yes some might fade or even brown a bit but it will come back pretty quick.

When I transferred tanks I ran into some problems and had my corals (90%sps) in the holding bin without light for 7 days. Nothing died but some faded, after a few weeks it all came back to where it was.

You can kill your corals much faster with too much light than with too little. I've done 3 dark days at a time, twice a month before; my tank never looked better. Don't know why I stopped, actually. I think it was that I didn't like not seeing the tank for 3 days. Maybe 2 would have been enough...

+1!

Just use tinfoil. Wrap it around the whole tank and see what happens. I'm battling a bunch of algae right now as well. As in four different ones. I am using black out and will add chaeto after to deal with the excess nutrients.

K I will try the blackout. Can fish still catch food in the total darkness?

Thanks for the many responses everyone

Zero last month, but it looks like I'll have to buy a new kit as the colors look wrong now

All GHA is on the rocks with some on the props and overflow. Cyano on both

Not bad as far as I can tell. I have 3 MP10wES on 92%
I'll have to step up my housekeeping methods for awhile. I used to clean my sandbed but stopped when the diatoms wouldn't go away. Fat lot of good that did me

I forgot to mention something I found before starting this thread. And this issue for sure was not helping me;
My RO was showing 2 TDS and a Hanna test showed 0.002 in my storage drum
I cleaned the RO out and replaced the Membrane

I agree with needing to step up my WC amounts

Too late to edit

My RO PO4 test last week was 0.02
Today it's 0.01, but who knows what it really is with an accuracy of +/-.04

Bought a new NO2/NO3 kit tonight and will check tomorrow

Did a 3-day blackout over the weekend. Nothing suffered much and the GHA backed off enough for me to get a bit of a grip on it. Plus the cyano and diatoms have subsided ... for now

Tonight I siphoned/scrubbed off as much GHA as I could and then added a Sea Hare
The little Bunny is going to town like there's no tomorrow ... each section it passes over is scoured right down to the LR :surprise:

So, now all I have to do is figure out where this problem came from in the first place .... :redface: