Thus far, the only controller I have is a Finnex Temp controller. I have been Dripping Kalwasser, and/or manually dosing for years! I decided it was time to try a dosing pump. After my years of hap hazard research, I picked up a New Jebao 4 head dosing pump with controller- for $75!- shipped! Went to Menards and got a 50' x 1/4" OD line and rigged it up. I did Bake the Baking soda- recommended. (That's funny right there- Baking the Baking Soda!) I used old 5 gallon buckets for the Ca and Alk (BRS CaCl and Baking Soda)- about 2 cups of each in 2gallons RO/DI- seems to stay in suspension- which is important for me- no stirrer, etc. I used an old gallon jug from my BRS MgCl for my Mg mixture- 2 cups of MgCl, and 1&1/3 cup Epson Salts(MgSo4) in the RO/DI gallon. I calibrated all 4 heads, only using 3 however atm. Then I set the controllers for the 3 heads I'm using- using the directions I got off of the Champion Lighting and Supply Website-read about that reading the reviews of the doser online. I didn't buy from them. It's pretty cool, you set the head, times per month, times per day, and the amount at each dosing also. Now, I have to start testing params every few days and making adjustments. For years, I don't test much and just dripped the same amount of Kalwasser- and pretty much all was well. Unless I need to catch up- no more Kalwasser dripping! In order to use dosing pumps with Kalwasser on my system- in order to mix it where it wouldn't precipitate out- I'd have to dose about 2 gallons a day. While I do evaporate that much or more a day- I don't want to mix a 50g drum of it, and/or mix it daily- defeats the dosing pump thingy all together. This new dosing pump- my Algae Turf Scrubber working well- my system hasn't been much better! PS- I've actually been really down and depressed lately-and while I'm amazed I got this hooked up today, I DIDN'T take any pictures of anything. While I've done some borderline amazing things in my life, accomplished some incredible things; for the most part, Life pretty much sucks, then you die.