Double Bubble Counter http://www.aquaessentials.co.uk/index.p ... ts_id=2278
Oracle Drop Checker http://www.aquaessentials.co.uk/index.p ... ts_id=2277
Oracle Drop Checker http://www.aquaessentials.co.uk/index.p ... ts_id=2277
Garuf said:Which one did you get?
The double one I disagree strongly on their usefulness, just search the forum for the thread in which we discussed it. The main reason is they can actually mean you limit your co2 levels below what you might actually need, especially in higher light tanks where co2 can easily be ran well into the yellow without issue.
The oracle on the other hand I think is a brilliant piece of design.