The Co2 Drop Checker.

[ShoC]

I have had a look, albeit not brilliantly.

I have seen people with a glass drop checker, that sits in the tank and indicates the level of co2 in the tank.
Where can I get one I look on aquatics-direct and aquatics-online but didnt see one (maybe i'm blind)
just im about to buy overtank luminare and thought I'll grab that while i'm at it.

 

[Rob.S]

HERE

Or have alook on ebay. I bought mine from this seller......... here Though he doesn't seem to have that one in stock (it's the same as Supercoley1's avatar)

 

[xxBarneyxx]

Yeah a lot of online aquatic places dont sell them (unless they are like AE and specilise in planted tanks).

I got mine off ebay for about £5 and it looks just like some of the £60 ADA ones I have seen.