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Old 09-07-2009, 04:42 PM   #115 (permalink)
mellow
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[quote=Smithson;1104457]
Quote:
Originally Posted by tsicar View Post
Quote:
Originally Posted by mellow View Post
your airstones are not going to be an efficient way to do it.
profit margin is low, and you have to keep your costs down.
This was the discussion in the AP forum, airstones aren't efficient enough, best to use the pump for aeration as well.

The profict margins are definitely low, I had did research for AP but decided due to the abundant water in Thailand, there's no way it could be profitable.
That wasn't me quoting about air stones, or profit margin. But I do agree about keeping cost down.
I looked at that picture in the link, and with a trickle tower the only way I can see of putting more oxygen in the water would be to aerate the last filter chamber prior to the water being pumped up into the Bio. I think I would still need air stones though.
Whats the AP forum? Research the profitability of what? Fish farming or air stones?
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