I might have too look into it, what ever the product is, they claim it releases CO2 over time and is stored just like nature somehow. Excel is a carbon supplement and has no natural or CO2 claims behind it.
well someone has to bite the bullet, i just ordered a bottle to try it out.. worst part is the shipping product is 9.99 and shipping is the same ..... ouch
well we'll know in a month if it does what it claims... i've got 2 rather well planted tanks but slow growth as i dont use ferts or co2 so if the stuff works i'll see the diff