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Re: Light intesity and CO2 injection

DeAngelo, James at JDeAngelo at dewberry_com wrote:

> I have a 39 gallon yank which has the same dimensions as two 20 "longs"
> stacked on top of each other. The tank has 60 watts of lighting from one
> Acitinc, one Sun, and one super grow tube.  I started DYI CO2 and didn't see
> any of the pearling that I have seen mentioned in this forum. I use the proper
> fertilizers and the PH is stable at 6.5.  Is my tank light starved? Is it
> pointless to continue the CO2 with this same amount of light

Jim, I wouldn't say it's starved, but you're probably not going to get a lot
of pearling at 1.5 watts/gal. I would increase it to 80 watts if possible,
but it really just depends on what plants you are trying to grow. Not all
plants need high light levels, and not all pearl profusely, even with high
light levels. You don't say what amount of KH is present in your tank, so I
can't tell what your CO2 levels are. Assuming a KH of 2.0 or higher, you
probably have sufficient CO2 levels. Whether or not having that is pointless
depends on what plants you're growing. It probably benefits crypts and other
low-light plants at least, and if the CO2 is regulating your pH to suit your
fish, then it's beneficial in that regard as well.

Dan Dixon