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View Full Version : Anyone use Poly-Filter ??



Old Dave
Fri Jul 16, 2010, 11:49 AM
I am told that you can buy a small block 10cm x 20cm for about $16.

You can use it to monitor what you are filtering because changes colours for the different things it absorbs.

My interest is that a small slice can be added when bagging new fish.
apparently it can give you a visual warning if there is too much ammonia etc in the water.

Might be a handy addition for long distance transports?

Old Dave