Re: Lighting and ferts Suggestions?
Thank you for your questions, pranavakira. Flourish Excel is an excellent source or organic carbon; unlike CO2, it will not have any effect on pH. Excel can be utilized either alone or in conjunction with CO2, depending upon your preferences. All of your plants will be able to derive the benefits of the carbon provided through Flourish Excel.
As long as you are using Flourish Excel as directed, it is completely safe for your shrimp; we do not recommend overdosing Excel on a regular basis, as it is a reducing agent. Here is what I would suggest for your 8-gallon tank:
After a major water change (40%), you should add 4mL of Flourish Excel. Thereafter, you can add 1mL daily or every other day. A good general rule of thumb for routine water changes is 20-25% weekly or bi-weekly.
Here is a pretty interesting discussion that I found concerning lighting for planted tanks. I think you may also find it helpful for your lighting concerns:
Have a nice weekend!