Quote:
Originally posted by dileggi
The nitrates should definitely drop as the matter is removed from the actual water column. Water changes will help a lot too to lower them.
As far as how often to do it, I'm not sure. What I normally do, and I have no idea if I'm right, is I do it once a week and then wait for all the "floaters" in the water to dissapate and then clean the filters out. If it looks like I need to do it more than once a week, then I'll do it as needed. But, as a rule of thumb, I go with once a week to play safe.
Also, maybe you can direct a power head towards the rocks? This may help to keep the stuff from settling on there.
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actually once of month or so it is good to direct the power head behind the reef rock also--alot gets trapped down behind between the rock and the glass- usually where current can't reach
----as to current 20-40 times your tank volume---I would suggest using Korilias because they are turbulent flow so you get more of a broad fanning out of the blast rather then a straight narrow blast from power heads
this also makes them easy to direct a flow across the substrate without a snow storm