LFS advice on algea

[saltyair]

Totally agree that GHA does feed off it's self by trapping waste - I will start blowing off rock effected (just one big one and one small one) It's not over taking the tank just looks bad in spots.

some great observations and thoughts.

Reading from aquarium corals - by Borneman
Average coral reefs tested NO3 - .25ppm
Average PO4 - .13ppm

Page 396
Algae growth in relation to nutrients and grazing
Low nutrients = coral growth (high grazing) filamentous algae growth
High nutrients = coralline algae / macroalgae

[Madreefer]

There is alot of mixed reviews on Melafix. Alot of postings saying that it killed things from corals to snails. Others swear by it. I'm thinking it killed something in your rocks which are still leaching out the PO4 which is being consumed by your hair algae. A freind and myself watched his tank crash before our eyes for some strange reason one day. He had a massive hair algae outbreak that lasted for 2 years. He tried everything possible to help beat it, which Dearth mentioned. Nothing at all worked and it would just get worse. Only thing that seemed to work is putting the rocks in a seperate container and letting sit for months while changing the water in the container weekly. That tank has since been shut down but another member on here has the rocks and it looks as though the hair algae is now gone. Good luck, sorry to say but it's goin to be a battle. And it will never disappear overnight as mentioned.

[saltyair]

Oh I did get a GHA outbreak in the first year the 180 was set up. It took 6 weeks before it was all gone. This is the first time it has shown again (after the melflex) I agree it has something to do with the medication. I have noticed over the last few days that it is starting to turn white and die.
still carbon dosing and using gfo/carbon.

The LFS did make me think - it's not super crazy once I read aquarium corals by:Borneman

Originally Posted by Madreefer

There is alot of mixed reviews on Melafix. Alot of postings saying that it killed things from corals to snails. Others swear by it. I'm thinking it killed something in your rocks which are still leaching out the PO4 which is being consumed by your hair algae. A freind and myself watched his tank crash before our eyes for some strange reason one day. He had a massive hair algae outbreak that lasted for 2 years. He tried everything possible to help beat it, which Dearth mentioned. Nothing at all worked and it would just get worse. Only thing that seemed to work is putting the rocks in a seperate container and letting sit for months while changing the water in the container weekly. That tank has since been shut down but another member on here has the rocks and it looks as though the hair algae is now gone. Good luck, sorry to say but it's goin to be a battle. And it will never disappear overnight as mentioned.