i would not use them as it is not the roots that need them, it is the leaves. the roots would love oxygen. my opinion is that co2 tablets are a waste.
kuri Reviewed by kuri on . co2 tablets hi .........has anyone ever used these and would you recomend them? http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&category=1510&item=4361962098 Rating: 5