Seachem bottles several fertilizers in separate bottles so you can customize the dosing to suit your tank. They are all called Flourish, as in Flourish Nitrogen, Flourish Iron and so on. Plants need over a dozen elements to live.
Dosing just one or two of them as fertilizer might work if there is a fair amount of fish food, which decomposes into fertilizer, but is low in a few nutrients.
Here is a link to a recent post that details what plants need.
Ok thanks! I went to the link you posted and I saw the dosing regime link in that post.
50% H20 change-weekly
3/4 Tsp-KN03 3x a week
3/16 Tsp-KH2P04 3x a week
1 Tsp-GH booster once a week
15ml 3/16Tsp-Trace 3x a week
4-8ml-Fe/Iron 3x a week
So my question is, would I be better to start doing the above or at first get just use the seachem line and go from there? I know that seachem makes a lot of different ones in bottles, but I am not sure which of them I need. I would like to just get one or two bottles at first rather than buying the entire line if possible. I was under the impression that Flourish Comprehensive could do most of what I needed, is that wrong?
edit: also if it helps I currently have java ferns, s. repens, ocelot sword, and anubias nana in the 75. For fish I have 1 green terror, 1 salvini, 1 firemouth, 1 senegalus bichir, 1 clown loach, and 1 leopard bushfish. The plants were in the tank before the cichlids came and have rooted enough that they arent being disturbed, though my cichlids have not tried to mess with them yet anyways. For filtration I have an Emperor 400 hob. Lightening right now is a 2 t8 bulb shop light but I am getting an led soon. Tank stays 76-78*f, I typically do 4-5 hours of light on then 4 hours with it off then 4 more hours of light. My ph is 7.0 I use neutral regulator once a week after water changes to get it there.