I set my timer to one minute on and five minutes off. This allow the roots to receive max Oxygen without drying out. It's all about O2!
The water gets pretty hot running the pump 24/7
Pictures don't lie...
indeed stinkbud you speaketh the truth. IF you can, set up your pump outside your resevoir or in a seperate res. so that your pump does not heat your system.
Indeed filthyfletch will tell you to run 24/7 in order to avoid clogging. The 4-5 minutes off time can cause your nutrients to dry in the small holes that make up your spray tubes.
stinkbud, what do you use as a sprayer in your DIY tubes?
There are alternative ways to add oxygen to your system, however as stink says, there can never be 2 much oxy.
I run 24-7 misters with GH nutes =no clog even if they were on/off.