#@^%*

Yes, it is liquid CO2, but it has a slightly different chemical composition than the gaseous form. Plants are best able to utilize the gaseous form. Excel is great when you only need a little of it, but for high demand situations it just isn't enough.
 
what is sm, and did you get like hairs growing in the tank that looked like hair algue but white, did your tank fix itself
 
If that is the 4 year old perpetrator in that picture........... still daddy's little girl!!
 
holy two year old thread!
 
Then the CO2 couldn't get into the tank. You just need a second bottle to act as a gas separator.
 
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