I have never used CO2 on a tank, and have some questions. How many plants can go into a tank befor you need CO2? Also, how much light is too much before you need CO2? This is a 10 gallon tank. If I do CO2, what system would be the easiest for me to use? Thanks in advance.
We really do need more information, but in general all plants will grow faster with added co2 as long as there is enough light. Light is usually the first thing in our tanks that limits growth, followedd secondly by available co2. With a 10 gallon tank assuming moderate lighting, say 20-30 watts I would think you'd be fine with flourish excel.
flourish excel is an alternate source for carbon. I've used it in small tanks before to great effect. You add about 1ml/10 gallons daily. Growth is slower than with co2, faster than without it. It tends to keep internodes closer together too which makes for nice looking plants.
I use the Natural plant system and mix my own yeast / carbon / sugar mix. It works great on my planted tank. Plus, it looks better than the mickey mouse style plastic containers. IM only using about 12 - 15 watts per gallon in my ten. Plants seems to be growing slowly but surely. THe Xmass moss is growing like crazy though.