<a href=showthread.php?s=&postid=15048007#post15048007 target=_blank>Originally posted</a> by HighlandReefer
This subject was discussed back on this page in this same thread:
http://www.reefcentral.com/forums/showthread.php?s=&threadid=1595003&perpage=25&pagenumber=8
Well I decided to give it a try. The "FW" version. I got the smaller, cheaper bottle, $5. The "Marine" was $16 and 3x the size. Since I have a small tank, I didn't think it was necessary to get the larger bottle.
Had a "small" area with a patch or two of HA. One my second dose, according to label, 95% controlled. Just use the scrapper and it came right off.
I don't know if this was part of the initial "cycle" or not, but it wasn't there previously, until I had a diatom outbreak. This stuff was "hairy" and green in color. Not as bad as others here though.
Since I only had a Damsel in the tank, and LR/LS, I figured my loss would be minimal, IF anything happened not according to the instructions.
It DID:
"ate" my cheato stock - ended up throwing it away.
"ate" GHA patches - 2 of them
"ate" my diatoms
It DID NOT:
kill my fish
turn my rock any different colors (LOADED with purple coraline)
affect any parameters
If you have a larger system, I would TRY a small bottle of the "FW" stuff and see if it works on a larger problem. It says its safe to dose 1ml per 10g (I think) a week to keep algae under control.
I am continuing to do weekly doses. When I run out of the small bottle, I'll step back and see if there's any ill effects.
Since dosing, I have added an ORA clown, and CuC. None seem effected by the dosing. All eat, fish look and swim healthy.
Let me know if you have any more questions. If I decide to continue very small weekly doses, I will be switching over to the "Marine" product. It's more product for the money, but for $5, I got to see if the "FW" version works. And it did for me.