Best Hydroponic Line Cleaner, cant find Ata Clean is the U.S

as the title says guys, have some autopots running and have read that irrigation additives are very helpful maintaining these systems. Seems that Ata Clean in the most widely suggestion for the autopots but I just cannot find anything available with shipping to the U.S. Whats the best stuff out there to keep your reservoir clean? There is a product called drip clean which seems similar link here ( https://www.walmart.com/ip/House-Garden-HGDPC01L-Drip-Clean-Fertilizer-1-Liter/734789281 but was curious what everyone is using.

As always happy growing

Drip clean prevents the salts from building up on your stuff. Is that what you are looking for? I use it and it 100% helps keep the salts from building up on my flood tray.

I use a solution of Polysorbate20 and chlorine to clean between runs.

To keep the nasties away I use Pool Shock granules. 0.1g per 10 gallons is ~ 1-2ppm. 5ppm is safe for humans and most plants.