Questions - Need some input

Hey can someone help me decide on a bio-pellet reactor i want one that is high quality and i also want one that is low price i have a 75 gallon tank with a refugium and i have cheato caulerpa and gracillera in it and there's a lot and my nitrates are still over 20 i dont feed to much and i got about 5 little fish so any advice would be helpful thanks guys

Hey if i bought a 48" 716 watt Metal Halide system and put it on a standard 75 gallon aquarium do you think i would need a chiller?

Hey i was thinking about buying your R.O system whats the difference between yours and some of the other ones?

Is anyone doing wave simulation with inexpensive powerheads? I have a cyano problem and i think more movement would help
also i want a a cheap wave maker that makes waves and has a good built?