As much as I love my Apex controller, I learned a valuable lesson that I've only seen discussed in passing. Mine is working flawlessly with one exception: When plugging in my "low draw" Drew's dosing pumps to my controller, I DID NOT use positions 4 and 8 as suggested one of our members. The Drew's pumps do NOT draw sufficient amps to reliably shut down the circuit after the "off" events. All was well for at least a week until the relays for the dosing pumps began to stick "on" after the "off" event should have taken place. This caused much of my entire CA jug to disburse into my tank over a period of a day. I found that by unplugging and replugging the circuit, it went to "off mode". Neptune talks about this and suggests that for very light loads on circuits handled by electronic relays (12356 & 7)additional resistance may need to be added for proper function of the on/off events. With light loads on these circuits, they can (and do) remain stuck "on" even after an "off event" is triggered by the controller. I also understand that the two mechanical relay circuits (#4 & #8) do not suffer from this anomaly. I simply reprogramed my 4 and 8 position outlets to handle the dosing pumps and moved my Mh lights to electronic positions. I'm hoping the Mh ballasts don't pop my breaker when coming on today. I don't expect they will. This may be a rehash of information already shared on BAR but my suggestion is to NOT place light draw accessories such as your dosing pumps on any circuit other than 4 and 8 unless you add additional resistance to the circuit. Has anyone else had this issue?