Yu may want to check further only a few types of power heads can handle being turned on and of a hundred times a day. The most common ones sold will burn up almost immediately.
For a little more than the cost of materials Aquatechnics makes a plug stip that will turn two sets on and off at timed intervals for @ $40. Again the correct power heads are required.
Marc, I guess my post wasn't clear. The relay won't effect the P.H. in a negative way. Might be worth a try. Depending on how the plumbing goes on the new tank I may not be using my wavemaker. If I don't I'll sell it to you cheap. Might be a bit of a wait though.
I troubleshooted and repaired control systems for 12 years before moving on to the biology field. The relay set up you are describing will without out a doubt burn up a power head that is not rated to ramp up or down or just cold stop the flow of electrical power to it as many times a day as a wave maker set up will do. This is fact not trail and error. You must have the proper Power heads and that is why they cost more.
Dave is there a difference in doing what Marc is doing and using a wavemaker? What P.H. do yo suggest. I used MaxiJets on my wavemaker and had few problems. I'm aware of the problems associated with wavemakers but what do you do?
Maxi-jets are one of the best PH for wave makers and run $40 - $50 a piece. The set up you are describing is how to make a wave maker the only thing I am cautioning against is using the wrong type PH ie AQUA Clear and the lot of $20 to $30 PH. There are a few other PH that work also.
Your idea is correct just that the cheaper PH will burn up.
Thanks Dave. Looks like there may be one piece of reef hardware that is cheaper up here in Canada. I get Maxijets for 18 to 33cdn. That's pretty good for you guys with the exchange rate
My bad, I guess that is why Ivy does not send me shopping. I just got back from the LFS. The chaper power heads run $8 to $15. The better PH are $22 and up