Rocks Turning Green - Tropical Fish Keeping - Aquarium fish care and resources
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post #1 of 3 Old 01-11-2012, 03:30 PM Thread Starter
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Exclamation Rocks Turning Green

Recently the rocks on the bottom of my fish tank have been turning green. What does this mean and is it a problem. Also how can I make it go away?
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post #2 of 3 Old 01-11-2012, 04:19 PM
algea probably so you will need to lower lighting time or just scrub it away
if you have alot of algea you will need to do lots of water changes while changing lighting time and scrubing away
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post #3 of 3 Old 01-11-2012, 10:29 PM
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Bear in mind that algae is natural and normal. Algae will always appear in the presence of light, as there will be sufficient nutrients in the water. It is impossible to have no algae in an aquarium, and there are many types. Controlling it depends upon plants. If you have live plants, algae can be trouble if it forms on the leaves, so it needs to be kept in check. But without live plants, algae is a good thing, since it is doing what plants would do, using nutrients to produce oxygen. It is up to you how much algae you allow, but light is the controlling factor.

Byron Hosking, BMus, MA
Vancouver, BC, Canada

The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian. [unknown source]

Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If you’re going to take it under your wing then you’re responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]
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