Nano auto top offs/drip lines

[demeyer2]

I'd like to setup a way to drip my top off with kalk in it. Does anyone have any cheap products they've found or DIY projects to accomplish this?
Thanks,
Dan

[Doglover_50]

I'm not sure this would work with the kalk, but met someone recently who used some sort of pressured water bottle (a camping product) that you could pump for pressure, then he ran line to drip for evap.

[dastratt]

Cheapest way is Kent aquadose. just gravity feeds. Only costs a few $.

I didn't trust that approach. I went with a Aquamedic system that Foster and Smith sells. But I eventually added a shutoff switch to avoid overdosing the tank (which happened once but fortunately I noticed before it overflowed the tank and killed everything). So I've invested over $100

I see Marine Depot is selling a DIY system, and you add your own pump. That might be a bit cheaper.

Next step up would be Tunze ozmolator.