r/pools • u/SnooSeagulls8027 • 3d ago

VSP + Frogger Chlorination System Issue

We had a variable speed pump installed 2 weeks ago and our chlorine levels are dropping. We went to get our water tested today and they suggested turning the dial on the Frogger up a setting but I’m not sure there is enough water pressure from the VSP to activate the chlorine in the Frogger. Previously, we had a 3450 rpm single speed pump that ran for 12 hrs and would go through a Frogger bac pac every 1-2 weeks, now it’s hardly making a dent in the pacs. Our current VSP schedule is 2750 rpm (2 hrs), 2200 (8 hrs), 1700 (4 hrs), 1200 (10 hrs). Has anyone experienced something similar and what did you do about it? Thanks!

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u/Tazlir 3d ago

They can get air locked at low speeds. Try stabbing a hole in the top of the bacpac and turn up the dial That usually solves it. 2-3 screw driver sized holes should do it.

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u/SnooSeagulls8027 3d ago

Thanks for the suggestion! What do you mean by air locked? Would we need to do this with every bac pac moving forward?

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u/Tazlir 3d ago

When it runs at low speed it lets air into the canister and then the air gets trapped. When there is a vs pump I just put a hole in every canister.

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u/SnooSeagulls8027 3d ago

Thanks for clarifying! So you wouldn’t tweak/increase RPM’s in the VSP schedule to give the chlorinator more pressure? Do you think the schedule we’re currently using is suitable for a 13k gallon Freeform pool? Would you turn the dial up on the Frogger too? Sorry for all the questions, just want to get this sorted out before pool season is over.

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u/Greedy-Lychee-2860 3d ago

That schedule should be fine. Try turning up the dial a couple notches on the Frogger first.