Stenner 45MHP2 Pump Install

[poolhound]

I am ready to order a Stenner Pump to upgrade my bleach addition system from the Liquidator. Is there an advantage to upgrade the supplied tubing from 1/4" to 3/8"?
I will go with the black tubing but do not understand what difference the tubing size will make. Also, I'm planning on reusing the Liquidator tank, any problems with that?

 

[NeedMoreSun]

The larger tube would be great if you have really long runs, but the Stenner handles head pressure great so not likely anything you need to worry about. I own three Stenners, a single head and two dual heads, each is pumping up 10 feet, over 30, and down 10. Or, drawing the same distance. Not for my pool though I use them for a 300 gallon reef tank but need the amounts being moved even more exact and they work great!

 

[dsmith99]

The larger tubing is not really needed for a pool application. If you were using the big pump tubes, and pumping over a long distance the large tubing might be a worthwhile upgrade.

What pump are you going with? The fixed rate, 100 psi pump controlled by a timer works great for a pool. It's not only cheaper but a lot simpler and more reliable than the adjustable rate pumps with the mechanical timer.

 

[GDN]

After research I also wanted to stay away from the adjustable/variable pumps due to the extra maintenance/repair of that mechanism. I had a timer already so that made the decision easy. I don't think the tubing makes any big difference. If you want more flow, upgrade from the 3 gallon to the 10 gallon. It's the exact some motor, just a larger tubing inside the pump itself. You can change that yourself. I've had my stenner installed about 3 weeks and couldn't be happier. Definitely the way to go for liquid chlorine. My information: https://www.troublefreepool.com/threads/136912-Stenner-install-Pentair-ET8

 

[RonsPlc]

I have a variable output pump, but I leave it set to full flow to save on the wear and tear of the mechanism. I just use a timer to adjust my chlorine levels throughout the season. I have been VERY happy with it!.

 

[poolhound]

Thanks for the help. I will tie my Stenner into my mechanical Intermatic timer which controls the filter pump so that the Stenner only runs when the pump is on. I ordered the 45MHP2 adjustable pump. My reasoning was that I will try to run the Stenner at 100% and set the pump timer to inject the needed amount of bleach. If I need to run the pump more than the Stenner I can adjust it down from 100% but should still be a high %. I didn't find a big price difference between the fixed rate and adjustable Stenners.