Wisoni has a spot of algae on the top of it

[Darbna]

Had a wilsoni for a few months now and has been doing good. Had to tear my tank down a few weeks ago due to velvet outbreak and since everything put back everything is doing great. I installed a phosphate reactor and gave since got the phosphate down to next to nothing. Only thing I have done diffrent other than remove the fish. Been feeding the coral and everything seems to be dong really good. The wilsoni doesn't seem as happy and the top looks to be receding a little and a spot of brown algae seems to be appearing. Anyone ever have this or have a solution. Sorry I dont think I can post a pic since hes in the back of the tank a little. I have a few Lordho and they are bigger than ever so I am at a loss.

 

[AndrewJ]

(Accidentally pocket posted, trying to delete)

 

[Darbna]

Diy stand

What is that

 

[Darbna]

(Accidentally pocket posted, trying to delete)

thats a new one. You had me googling @AndrewJ

 

[Darbna]

Here is a close up of the spot that is receding and algae formed. I also included a pic of tank where on the lower left you can see its placement. I tried moving it up on the rocks but no change.