Diatom bloom producing oxegen?

[allie_san]

I have 2 juvenile clown fish, a jawfish and about 15 snails/ hermits.. I've tested for nitrates (sailfert) it's kind of hard to read the results for that kit but as far as I can tell they look to be around 5ppm. I don't have a phosphate kit yet but I'm using ro/di. Should I still get one?

I don't have any nutrient control.. Besides a skimmer and filter sock and a small refugium. Do most people use some form of it? I haven't read much about it, didn't know I was missing something!