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DIY Dosing pumps


Rick

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This is my DIY Kalk Reactor I have it on a digital timer that comes on once every 6 hrs for about 5 mins and activates both PH's to mix the Kalk up - this is tied to my ATO.

 

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Had to redo the top and added a BH with a clean-out plug so I could just open it and add mixed kalk back into it. I even made a acrylic wrench for the clean-out plug got tired of "looking" for something to use to open it

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Nice. Is there a reason for 2 pumps other than for the volume? I have a 4" tube that's 14" long (part of a broken skimmer I had given to me) that I'm thinking about using with a powerhead (About 280 GPH). For the top and bottom plates I was thinking I may just pick up a few of the pre-cut disks at tap plastics. Not sure yet on what to use to turn the dosing on and off though. I plan to turn it on/off as needed to keep PH consistant.

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I wonder if I could just position it up higher than the pump and put an electric valve in to gravity feed since it will just be a drip?

 

That'll work and not, with the kalk rector sitting higher the water will siphon back thru the pump. But since it sitting higher, all you need is a float switch to activate a relay to turn this in-line valve on and off (NC) (bad pix sorry)

 

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I use 2 PH's cause the tube is 6" dia and 26" tall, not including the base and the flanges

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That'll work and not, with the kalk rector sitting higher the water will siphon back thru the pump. But since it sitting higher, all you need is a float switch to activate a relay to turn this in-line valve on and off (NC) (bad pix sorry)

 

 

I use 2 PH's cause the tube is 6" dia and 26" tall, not including the base and the flanges

 

I assume the float switch is to allow top of water to enter the reactor? Is it necessary to hook it to a top off tank or can it be run without?

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Well, you'll need a tank (trash can, rubber maid tub) to store the ro/di water it's not reconmended to hook straight to the ro/di unit, TDS Creep.

 

It can be hooked up without the tank - but you'll run low and have the chance of dosing straight kalk into the tank - cause a nice white cloud and precipitate on your pumps and heaters.

 

just my .002

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