Thank you! It is a 7500K LED lamp. It is a "Fluval 9 gallon tank" readily available with carbon insert in foam. I set it up 2 days ago and keep lights for 8-10 hrs. Along with dozing I am using Fluval Stratum substrate. I wish the entire carpet fills with grass. Also I am using RO water. For fishes I plan to introduce from the choices of guppies,tetra, swordtails and platies. Thinking of 3 guppies and 5 tetras OR any 2 species (3 fishes each)Welcome and that's a very nice looking setup.
Tell us more about the tank's lighting? Adding CO2 can increase the growth rate of your plants, but only when it's balanced with the lighting you have and the nutrients that are supplied to the plants. It's a balancing act.
What do you intend to stock in terms of fish?
Unless there's things in the water you really need to remove, I wouldn't use RO water for your weekly water changes in this tank. After you've established a nitrogen cycle in this tank and you know it produces nothing but nitrates with your test kit, you could probably stock with 8-10 neon tetras or 10 celestial pearl danios. Both groups would be too much for 9gal. There's other options too in terms of stocking. Hopefully others will chime in.The tap water is quite hard. It looks little cloudy whereas RO water is crystal clear. I gave a thought on this but wouldn't fertilizer dozing (Flourish Excel) make up for that?
For fishes, then I will go with neon tetras and may be these other species you mentioned if I can get those. How many number of such fishes can I keep?
All fish swill skim the surfaces. Those listed above should do no damage to them.One more thing. Do these fishes nib or uproot my plants?