The size is 8 gallons, tank mates are one betta fish and two rcs. I have CO2 and a strong light. I dont add any extra fertilizers should I? Im not sure of the name of my plants, I know for sure one is a crypt. I'll post a picture
If you always do what you've always done, then you'll always get what you've always got.
flourish from seachem is a very good fert. i also need to get order some flourish from online because my store doesnt sell it. theres a regular flourish and then a flourish excel that has liquid CO2 in it which i would say you dont need since you said you said you have CO2 already
co2 is worthless if you dont add fertilizers, you have to work with the law of minimums. Your plants will only grow as much as your lowest amount of resource, ie co2, light and ferts. With co2 you want to be dosing quite a bit of ferts. Flourish is micro nutrients which you will need, but you also need macro nutrients. Personally I use EI (estimative index) dosing.