sediment?
My tank is just about a year old and all is well. The other day while I was feeding my seahorses (using a pipette) I discovered that if I flushed my rocks tons of white cloud comes out of tiny holes. It looks pretty cool but then I wondered should I leave it alone or clean out all the rocks. My rocks started out bare and now most of them are covered with purple, coralline algae I guess. What's the white stuff, good or bad? Fluff it or let it build up?
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