Converting a maxi jet 1200 for pump on calcium reactor

[LeanneP]

I have purchased a maxi jet to use as my pump for my calcium reactor but I have only found one sight that explains how to convert it and I am a little confused This is the article:

"Finally, the best way I have found that provides good effluent flow stability for the money is to feed the reactor by using a power head. A Maxi-Jet 1200 seems to be well suited to do so.

You can connect the reactor inlet line to the discharge of the power head in a couple of different ways.

First, it is important to notice that the power head is designed to pump a lot more water than what the reactor will require so the small volume of water will not provide for proper cooling of the power head and the increase in temperature will promote calcium carbonate precipitation in the power head shaft eventually ceasing the pump rotor and getting it stuck.


To prevent this and also in the interest of providing a more stable pressure in the inlet, I recommend providing an outlet for part of the water so it returns back to the sump thus creating more flow through the power head. To do this is rather simple.

Instead of connecting your feed line directly to the power head outlet, connect the line to the coupling that comes with the power head, the one that has a hole originally to be used for the injection of air to the power head, then just insert the coupling to the power head outlet. For further reference, this is the cylindrical coupling that support the fan like piece used to redirect the power head flow. Remove the fan like piece; cut away the two little pins that support the fan like piece and you will have it ready to insert a hose into it.

You can also use a tap to thread the inside of the coupling and install a John Guest connector to attach a ¼” poly line to it. (see picture 13)."

I have the John Guest connector they talk about so I am assuming that is where the feed line for the calcium reactor goes into. But they talk about too much flow so I am wondering if I should just take the plug out from where the air line would go so the extra flow goes there? Is that enough flow reduction?
Also there is nothing to thread to on the coupling so I was wondering if I can silicone the pieces together with aquarium silicone?
Thanks for any help or suggestions.
Leanne