[jrman83]

What is it that water conditioner removes that plants need? It doesn't remove gh. Something I have never heard of before. I know it can remove chlorine/chloramine/heavy metals, but never heard is robbing the plants from things in your water.

 

[jrman83]

I usually go to GLA but have also used aquariumfertilizer.com. Both have prices comparable to each other.

 

[jrman83]

It is hard to say since you don't say much about your setup. It looks like maybe medium lighting? I think many do an abbreviated version of EI for lower light level, low tech tanks. You would take the recommended dose and cut to 1/4 to 1/3 and maybe only dose that once a week after your water change. You change at least 50% of your water per week.