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Originally Posted by ron101
Sounds like 'old tank syndrome'. I remember reading a few posts over in Shimek's forum on RC about old sandbeds. I believe he was saying that after several years accumulated detritus and bound-up nutrients can start to cause problems. He doesnt recommend re-using old sand.
I guess according to his info, one should tear down the tank once every several years and clean or replace a portion of the DSB. I can't wait...
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Thats what i had done...it did not work in the slightest.
I am not a scientist, but i really think most of that is bogus.
What then about the rock ? It would have the same problems aswell,yet noone tears that out and replaces it.
So If there is nutrient/detritus build up to toxic levels within the sand bed, then its really defeating its original purpose.....the whole idea of the DSB was to support the planktonic life to process these organics.
And it clearly doesnt.
If there were no sand bed at all, the end result is the same....you still end up having manually remove the stuff anyways.