Dosing kalk into Backpak skimmer

[jadavis01]

I tried dosing kalkwasser into the venturi inlet on my CPR Backpak II protein skimmer (I think I heard this tip from dr. Ron Shimek). This worked fine for 3 days but now it seems to have clogged. I expected this but not so soon! I'm using a Kent Aquadoser 1400 ml model and dripping about 1 drop every 2 seconds or so. The skimmer pump (RIO 600 RVT) is still running but I am getting no bubbles (no skimming). Anyone else tried this? I am now dripping into the pump intake in the CPR preskimmer box. I am considering replacing the RIO 600 with a Maxi-jet 1200 with RVT attachment. Anyone done this and dosed kalk into it? Thanks

[FishDaddy]

Injecting Kalk into a skimmer or other equipment can cause problems as the kalk will build up on the surfaces and clog the apparatus. I drip mine into the output of a powerhead. The Maxi-Jets have a deflector attachment with a hole on top (designed to affix an airline for oxygen infusion) into which I put the drip tube. Even this needs to be cleaned periodically as the Kalk builds up on the deflector hole and the tube itself.
Dick


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[jadavis01]

Thanks for the reply fishdaddy. What you are saying is what I am doing. The oxygen infusion you mention is the venturi I'm talking about.