Have been for years. Also use X10's for other home lighting applications. I've got them controlled from a program on my computer which downloads and stores the "schedules" in a black box. I've also got a couple of wireless remote controllers which makes it very convenient for me to turn the lights on and off on demand by merely pushing the button on the remote.
I also use X10 to feed the signal to my topoff pump.
Last year I installed a bridging amplifier on my circuit breaker panel which greatly improved the reliability of the whole system.
The X10's work fine in a power strip AS LONG AS the power strip doesn't have any surge protection built into it. A lot of the power strips are built for computer equipment and I believe it's the surge protector that keeps the x10 signal from getting through. Drove me crazy before I figured that out.
No problem placing more than one on a power strip. However, they are wider than a normal plug and might cover up more than one outlet. Also if the outlets on the strip are oriented so that the 3rd prong is facing either left or right (ie. towards another plug), then that'll force you to plug the X10 unit in so that it might even take up 3 or more spaces once you plug your cord into the X10 module.
if you search for x10 bridge you should find quite a few places selling them.
They are only needed if your controlling things on both sides of your circuit breaker, if all the equipment is ran off breakers that are on the same side, the bridge wont help.
In my case, whole house is on the same phase, so no bridge is needed
I too use x10 for all reeftank operations, I found them to be extreemly reliable compaired to regular timers
for anyone who does not know and I am sure most of you do. you can find all your X10 stuff at x10.com. they also sell stuff that will work on an x10 system by other manufactures at some home improvement stores like Lowes. I have an x10 system and love it.
I use the intermatic digital timers. they are all independant and have a battery backup. they will remember thier programming for up to a week. And when the power comes back on. it knows what part of the cycle it should be on and turns the lights on or off.
there are two types. 1 timer has one on/off setting per day. and there is the next model with 14 on/off settings per day. both have the same operation function. just more programming capability....