chel, the neptune aqua controller junior does all that. cycles the nano streams, 15 minutes one, then the other. it handles the lights too, built in timer for however many lights you need turned on/off, sunrise, sunset...does not adjust ph, just has a probe to measure it. it will adjust temp up and down according to tropics if you have chiller and heater, otherwise i use it as a safety so in case my heater goes wacko the controller will kill power to it. the controller consist of a backlit lcd display and an 8 socket power strip. the controller controlls the power strip thru a phone line cable that goes from the lcd display to the power strip. the ph and temp probes come out of the lcd and into the tank...
alien i think the 250 is overkill for this tank, it is only 17 gallons, not 22. at only 14 inches deep, the 250 will cook this tank i think...
i ordered the aqua medic 150 from PA. if its not enough ill get the 250...