The water parameters ideally should have no ammonia, no nitrites and only nitrates around or below 20ppm. This would provide sufficient nutrients for the macro algae to absorb. I would recommend getting some chaetomorpha (spaghetti algae) as its very tough, doesn't go sexual an and doesn't break down like racemosa (grape/bubble algae) can. You can then add your cleanup crew too to clean up the rocks and stuff.
Do you think it would be adviseable to keep a pair of oysters in my Refugium? I have been looking on ebay and have seen the following Oysters for sale and was wondering if I could get a pair to thrive in my refugium as; if you read the description; not only do they filter the water but also their eggs produce a nutural food for fish and corals.
A guy I was speaking to a while ago stated he kept several oysters in his sump and they helped his system out a lot. Do you believe they may do the same for me and my reef tank? What are the tank size requirements for keeping them? Also how big do they grow?
cheerz
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