Purigen and Phosguard for lowering already low nitrate and phosphate levels

[kwirky]

I think going for low nutrient levels might not help with a pest coral. My phosphates are at theoretical zero (rowaphos), and nitrates are either unreadable or below 0.2ppm (salifert kit), and my xenia still grow like weeds. I only have 3 small fish in the 120g setup so far, and I feed them like soviet farmers .

Maybe you'll have resort to aiptasia-like treatments?

If you're considering a phosphate media, advancedaquarist.com has a VERY detailed analysis of rowaphos and phosban, both ferrous oxide phosphate media (versus the aluminum oxide ones which are harmful to inverts. phosguard's an aluminum oxide product). There are pros and cons and that article lists and explains some of them.

http://www.advancedaquarist.com/issu...004/review.htm