Hello everyone. I am very new to the marine aquarium hobby and I have a 150gallon display tank (fish only) and a 100 gallon sump right underneath it. I live in India and the availability of salt water equipments are at a minimal. I’m currently traveling in the USA and am very intrigued by controllers ie Apex, GHL and hydros. Being an amateur what do you guys think, which controller should I or should I not get for my fish only setup. Any help is appreciated. Thanking you all in advance.