Did my weekly water change today. I removed a little over 70 percent of the water. I added 1 tablespoon of Seachem Equilibrium (whoa that made the tank cloudy of a while), 1ml of Seachem Flourish, and 1 ml of Seachem Prime to my tank.
The cloudiness is my only complaint about Equilibrium, but it (the cloudiness) does disappear within a few hours or at most overnight. The liquid form in the AquaVitro line would avoid this. I cannot afford the liquid, I use Equilibrium.
This is a 20g tank, so I would add 1/2 teaspoon of Flourish Comprehensive after the weekly water change. No more, and just the once weekly. You likely won't need a second dose, given your plants and other balancing factors.
I know the Seachem Equilibrium is dosed once every water change. How about the Seachem Flourish? The bottle days 1 to 2 times a week, do I followed that?
Flourish Comp once, as mentioned above. Equilibrium after the water change, but probably less. Once you have your GH test you can sort this out. For the plants which is why you are using it here, you only need around 4 to 5 dGH. With the one tablespoon added, you will probably find the GH is around this now. When you do the water change next week, replacing half the tank volume, you only need add the Equilibrium to increase the GH in the fresh water, so depending upon the GH test result prior to that water change, a teaspoon not a tablespoon may be all you need.
I also removed one of the three light bulbs I had on (now I have 26 watts on for 8 hours a day) as you suggested in my other thread.
This should work. I have two 10w CFL Daylight over my 20g high, but no fish (the major source of nitrogen) so you should be fine.
Does Seachem Equilibrium and/or Seachem Flourish add any nitrate to the water?
Flourish Comp does have nitrogen, in the forms of ammonium and nitrate, but minimally. As I think I have said elsewhere, this liquid fert has all nutrients required by aquatic plants except oxygen, hydrogen and carbon. But some of the macro nutrients are minimal because they occur naturally from biological processes and water changes.
Also do you guys recommend I start to dose Seachem excel too?
No. There is no need in your tank for carbon supplements, even if they were safe, and Excel is not safe. It will melt some plants (Vallisneria is especially sensitive) at normal dosage, but if it should be overdosed it can kill plants, fish and bacteria. It is also hazardous to humans, as specified in the chemical fact sheet.
Excel (and API's CO2 Booster is the same) contains glutaraldehyde and water. Glutaraldehyde is a disinfectant used in hospitals, in anti-freeze, embalming fluid and elsewhere to kill bacteria. I do not see the wisdom of adding this to a fish tank.
Carbon occurs as CO2, present from the respiration of bacteria, plants and fish, but mostly from the breakdown of organics in the substrate. There is plenty of this for the plants, to balance your light and other nutrients and fish load.
Byron.
On my way to Amazon to buy. 
