<a href=showthread.php?s=&postid=15024699#post15024699 target=_blank>Originally posted</a> by RyanEG
Just a question on the sea hares, dont they kind of recycle the PO4? Eat the algae then their waste puts it back into the water column?
yep. And this is the point where a system with lots of flow will sweep the poop up and over the overflow. The mechanical filter, skimmer, or lit fuge in sump can then deal with it instead of having it collect in the display and act as a fertilizer for algae.
It looks like you have Bryopsis, several types of Caulerpa and some Neomeris growing in there. If it makes you feel any better, even my own aquarium was smothered in problematic algae at one point. (I'll have to find a pic.) We've all been there. The algae problem in these pix isn't as bad as I thought it might be.
I like the Sea Hare suggestion. Make sure to get the right kind. I've never had much luck with the blue spot kind. Look for a big ugly one!
Aplysia or
Dolabella spp.
(I'll see if I can find a pic of the one I used.)
Tuxedo Urchins are a good choice, too... but nothing will eat it faster than the right kind of Sea Hare!
Manual algae removal is a good option here- but I try and avoid this option because it's a PITA.
Large Turbos would also be a good investment.
Tech M can work (IME) but it likely won't permanently solve the problem. In addition, it (Mg) can effect desirable mollusks (snails, Tridacna etc.) negatively IME. Personally, I would boost Mg with Tech M to around 1350ppm and maintain it there while loading up on snails and a large Sea Hare.
Pellet foods are (IME) a great option to keep large fishes well fed while still minimizing pollution in the aquarium.
Rowaphos is extremely expensive but one big dose can turn that green jungle brown overnight
