So I was recently at my local Fish shop getting some watches to take care of a snail problem. My freshwater tank and I was looking around there used tanks/equipment area and they had a massive bin of one year old used Apex controller equipment. I got the trident to energy bars, the auto top off the Dos probe holder standard main Apex module and dose reservoir.and all the aqua bus cables that I need for $500 so if you could give me some advice, I could use it