mediumrare said:
rygh said:
I have used it. 240G tank when I had a stubborn cyano issue due to a filter failure.
It seemed that once the cyano was heavy, normal phosphate reduction did not help.
I have a lot of softies and LPS.
No problem at all, and it did a good job on the cyano.
BUT!! : I did not exactly follow directions.
1) I used 1/4 the amount it said to use.
2) I took the top cup off my skimmer, but left it running. So it was overflowing like crazy in the sump.
So way more oxygenation than a little air stone.
Yea, Im planning on underdosing and doing several treatments spread out over a month as well as overoxygenating the water with my skimmer on, but the gate valve open all the way + a huge airstone.
I am not sure several treatments over a month are the best plan.
It took almost a week to really get the skimmer back to normal.
And carbon + gfo have to be removed for almost as long.
So several treatments in a row could result in some rather high nutrient levels,
plus the extended stress might be an issue.
I would suggest just one, let things get back to normal, and wait a bit.
Check phosphates daily after the treatment.
It is quite possible you still have a problem, and the cyano was keeping it low.
If it jumps back up, fix that first. Otherwise treatments will be endless.