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I have not used it, but I've read every customer review on a forum...its a no go.
First off, it's not enough for a 90gallon. You'd have to have 2-3 units/blocks to get good CO2 levels. That alone will make it more than double the start up cost of a fully automated pressurized setup.
Add to that the maintenance (the metal block holders have to be de-scaled every couple months) and the cost of carbon blocks (nearly 3x the cost per block as opposed to a 5lb CO2 cylinder re-fill...and you'd have two blocks to replace).
Thanks Malkore. What would you recommend at the most cost effective route. Should I go with a full pressurized system? A DIY? Any input will be appreciated. Thanks! Caribou
The initial costs of a pressurised system are higher, but it's cheaper in the long run.
If you can afford it, please buy a pressurised system. I just had a whole lot of trouble with my DIY setup. I'm thinking about getting a pressurised setup now. With a 90gal and DIY, you would probably need like 6 or 7 bottles! My bottle seams with the silicon leak air, my yeast won't start, or has a super start and is done in 2 days, etc. And that's always with 2 cups of sugar in each bottle and so on .