caring for plants?

Welcome to the site

Do you dose any sort of ferts or co2 into your tank?

Does the "brown stuff" rub off easily? How long have the tank been up?

i have a little yeast co2 thing i bought, its a Red Sea C02 Bio System. and i use this Kent Pro-Plant that my cousin gave me. the tank has been setup since may 27, 2007, still fairly new. should i have changed the water?

Im not sure what the kent pro-plant deal is but I think you need to do a little more research on fertilization with aquatic plants.
Nitrate
Phosphate
Potassium

All these are needed in the water for plants to thrive. Developing a routine will help insure plants make it and beatr algae.

Some case magnesium and calcium are also needed but you form Houston and I know you guys have ok water in that direction.

The red sea will work ok for your tank.

does seachem flourish excell cover all of those ferts? or do i need to buy each fert seperate? is there any one product that will work? i have also read about root tabs how do those help the plants??

thanks for the help.