Anyone can make a recipe. They're open-source. Take a look!

Official Recipes

The Australian: This recipe is similar to the default one, but with some changes: - Uses Sodium Hypochlorite as the sanitizer - Uses Sodium Bisulfate for lowering the pH
Spa Marvel + Bromine: This is a recipe for Bromine spas using a natural sanitizer system, such as Spa Marvel. It assumes you want to keep trace bromine levels of around 0.75 ppm. This assumes that you're adding the spa m...
Default: Targeted at salt & chlorine pools, this plan takes 6 readings & uses calcium hypochlorite as the sanitizer.
Default (dichlor): This is similar to the default recipe, but uses dichlor (dichloro-s-triazinetrione) as the sanitizer.

Community Recipes

Default w/ Sodium Bisulfate (plush_spot_54): Targeted at salt & chlorine pools, this plan takes 6 readings & uses calcium hypochlorite as the sanitizer, with the added option of Sodium Bisulfate to lower pH.
ECOsmarte (gleaming_guard_569): This recipe is for pools using the ECOsmarte copper / oxidation system. For the dissolved oxygen reading, it assumes the pool's elevation is approximately 1300 ft.
Salt Pool (motherly_mind_741): Targeted at salt pools. This recipe will suggest: Salt Additions To Shock or Not To Backwash or Not Salt Gen Time Increase or Decrease Phosphate Treatment Cyanuric Acid pH Alkalinity Calcium Hardne...
Bromine Spa (meaty_start_588): This is a recipe for basic Bromine spas. Nothing fancy, just normal maintenance and logging. Includes Phosphate and Hardness and Cyanuric Acid (some say it is not needed for bromine - debated issue)...
delete me (playful_scale_539): Please Use Spa Bromine (meaty_start_588) This is a duplicate as a mistake... please delete me ;)
Default + Heater (ethical_conclusion_14): This is a proof-of-concept recipe that is similar to Default, with the following changes: - Adds a reading for temperature (f) - Adds a treatment (if it's too low) telling you to crank up the heater...
The Australian Test 2 (unsteady_summer_697): This recipe is similar to the default one, but with some changes: - Uses Sodium Hypochlorite as the sanitizer - Uses Hydrocloric Acid to lower pH
The Australian (sorrowful_tap_420): This recipe is similar to the default one, but with some changes: - Uses Sodium Hypochlorite as the sanitizer - Uses Sodium Bisulfate for lowering the pH
The Australian Test (flaky_burn_332): This recipe is similar to the default one, but with some changes: - Uses Sodium Hypochlorite as the sanitizer - Uses HcL 33% for lowering the pH Also tweaked the multipliers on hcl which I believe n...
AU_1 (helpful_tooth_557): This recipe is similar to the default one, but with some changes: - Uses Sodium Hypochlorite as the sanitizer - Uses Sodium Bisulfate for lowering the pH
AU_1 (impeccable_entry_495): This recipe is similar to the default one, but with some changes: - Uses Sodium Hypochlorite as the sanitizer - Uses Sodium Bisulfate for lowering the pH
Chris M (untidy_press_370): Targeted at salt & chlorine pools, this plan takes 6 readings & uses calcium hypochlorite as the sanitizer. It also includes a temperature reading, just for reference (it doesn't affect the recommen...
Chris M (joyful_yellow_166): Targeted at salt & chlorine pools, this plan takes 6 readings & uses calcium hypochlorite as the sanitizer. It also includes a temperature reading, just for reference (it doesn't affect the recommen...
Chris F2 (serene_extension_626): Targeted at salt & chlorine pools, this plan takes 6 readings & uses calcium hypochlorite as the sanitizer.
Chris F (untidy_shift_164): Targeted at salt & chlorine pools, this plan takes 6 readings & uses calcium hypochlorite as the sanitizer.
Chris Au (severe_progress_840): Targeted at salt & chlorine pools, this plan takes 6 readings & uses calcium hypochlorite as the sanitizer.
SPA 1800L Uv & Ozone & Sodium Bisulfate (experimental) (enraged_secret_755): Target for Spa 1800L with only UV & Ozone for sanitation. This is Experimental. Do not use if you don’t send water sample for testing. I created this fork to try & replace the muriatic acid with Sod...
SPA 1800L Uv & Ozone + temperature (experimental) (boring_spot_965): Target for Spa 1800L with only UV & Ozone for sanitation. This is Experimental. Do not use if you don’t send water sample for testing. It also includes a temperature reading, just for reference (it ...
Default + temperature (shoddy_habit_820): Targeted at salt & chlorine pools, this plan takes 6 readings & uses calcium hypochlorite as the sanitizer. It also includes a temperature reading, just for reference (it doesn't affect the recommen...
Phlvl (elated_green_390): Targeted at salt & chlorine pools, this plan takes 6 readings & uses calcium hypochlorite as the sanitizer.
ESVF (ideal_solution_94): Targeted at salt & chlorine pools, this plan takes 6 readings & uses calcium hypochlorite as the sanitizer.
Softub 300 Model (shady_break_334): This recipe is optimized for a Softub Model 300 spa
SPA Dichlor (sardonic_print_756): This is similar to the default recipe, but uses dichlor (dichloro-s-triazinetrione) as the sanitizer.
Default (ringed_prior_388): Targeted at salt & chlorine pools, this plan takes 6 readings & uses calcium hypochlorite as the sanitizer.
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