Problem with my live rock, need help!

[fishgod336]

I have about 100 pounds of fuji live rock, for the first three months i had a lot of purple alge growing all over the rocks, I also had a lot of feather dusters that were on the rocks as well, Now I have no purple algae, and no feather dusters, The rocks just look like rocks, is there anything i can do to make the rocks grow again???? :help: :help: :help:

 

[sagxman]

Give us your specs, tank size, levels, lighting. Could be many different things.

 

[fishgod336]

I am relitvely new with saltwater, I have a 150 gallon tank, with two 48" coral life lighting, I last tested the ph level, and the nitrate, and they seemed to be normal, I have a Rio protein skimmer, that i have to empty the nasty green water about twice a day, that is all i can tell you, I have two eels, a V-tail grouper, and 2 triggers

 

[sagxman]

Get a calcium test kit. Coraline algea needs calcium to grow. If you aren't dosing any types of trace elements, this could be the result. Also, you may need more powerful lighting.

 

[fishgod336]

it must be the calcium, because I have has the same lighting since i got the tank, and I had great algae growth for three or four months, what type of lights do you recommend, as well as trace elements??

 

[sagxman]

If you want to go for the best IMO go with metal halide lighting.
As far as trace elements, I use a two part additive. One part is for PH/Alkalinity and the other part is for calcium. It has all kinds of good stuff in it. There are a number of brands. You could also just dose calcuim alone if you wanted. Get a test kit though so you don't end up with too much or too little.

 

[fishgod336]

Alright, thanks a lot for your help I will try the two part additive first, see if that works, and then change the lighting if I have to, I really appreciate your help thanks man

 

[shrimpdady]

Don't waste your money on Metal Halides unless you plan to keep clams or coral with high intensity lighting requirements.
People over recommend MH.
For a FOWLR your basic NO flourescents will do just fine.