Hello, it's me again. More questions, as always. Sorry Carol! OK, I have read that "Aeration should be used only at night, because during the day plants need carbon dioxide to photosynthesize" (in "Aquarium Designs Inspired by Nature" by Peter Hiscock). My airpump is turned on 24/7. Am I aerating my tank too much? Should I turn off the airpump during the day? My water flow from the filter is quite strong which I think also aerates the tank. Next question, lol. I have some plants in my tank, and they're low-light. I will also be getting more low-light plants soon (java moss as suggested by Gunnie!). My tank's volume is 30 gallons. My lightbulb is 20 Watts, which makes it a bit above 0.6 Watts Per Gallon of light for plants. Is that really enough for low-light plants? I am thinking about using two 20W bulbs. There is a problem however. My tank's hood is designed to hold only one lightbulb. Below is a picture of a two-bulb light strip. Can I, somehow, remove the white single-bulb part from my hood and install the same, only two-bulb part, into my hood? Are such light strips available for sale? Or do I have to buy an entirely new hood? Also, does anybody have a lot of experience with various lighbulbs and their colors? I am currently using a 20W Sun-Glow bulb by Hagen. It is a full spectrum light that has a fairly natural color, but it isn't quite "white". I do like this light but I'd like to try other lights as well. Does anyone know which bulbs produce a full-spectrum natrular-looking WHITE light? Thanks for any repiles and thanks for reading this boring post!