Hey Jon,
Well I used to have this same problem in my angel breeding 10g tanks.
I don't have any clue why this happend in this tank and not my other fw tanks :?
I do believe your on the right track though with the sand and silt in fw thing. I wouldnt worry too much about it. A razor blade takes it right off.
cheers
__________________
No matter what the morrow brings, inventors keep inventing things.
-----------------------------------
Jonathan
-----------------------------------
www.cakerybakery.ca
|