Don't know how many pieces of equipment I have sitting on the shelf or have sold off because I thought I needed them or because I wanted them and thought they would be a great addition or serve a valuable purpose or get those cool new gadgets that are all the rave. I have since stripped down to the lesser is better approach. Less to maintain, less to fail or malfunction, less to replace, less to put my trust in while I sleep or go away, etc. And it has made my life simpler. Maintenance simpler. And I have found personally keeping my system stable is easier for me to do with less to look after. I now run nothing more then a skimmer, filter socks, and gravity auto top off. Plus when I don't need to spend my hard earned cash just maintaining equipment or replacing parts it leaves me with extra cash available to use instead on filling my tank with what I really want. Coral and fish. I have no experience with the controllers you were talking about but I think if things are doing great how they are now and your doing great without them then you probably answered your own questions. Hopfuly others will chim who can give you actual experience with or without the controllers and probs you have to help answer more directly your questions.
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