- Location
- Ossining, NY
Steve,
I have had mine for about 9 months with no ill effect - and it will be close to a year with the current block. If you are hesitant - I'd get 1/2 block - least this way you'll know if you need more or less once you figure it out.
Scarf, got you on 2 blocks.
Alfred - I don't know how much you feed your fish, but I have 12 fish and this block lasts me less than a year. I feed my fish and don't worry about how much.
House
I have had mine for about 9 months with no ill effect - and it will be close to a year with the current block. If you are hesitant - I'd get 1/2 block - least this way you'll know if you need more or less once you figure it out.
Scarf, got you on 2 blocks.
Alfred - I don't know how much you feed your fish, but I have 12 fish and this block lasts me less than a year. I feed my fish and don't worry about how much.
House