Buying guides: filters, heaters, air pumps, test kits and planted lights

Pick your tank size to see the filters and heaters their makers rate for it, how much water each moves or the watts it gives, and why the others are left out; then air pumps by Tetra’s ratings, water tests by what you need to read and planted lights by the light they give your plants. No scores and no paid places: the ratings are the makers’ own.