Drip clean is phosphoric acid and potassium oxide. Pekacid is the same thing but much cheaper and in crystalline form. I got some when I started using Blumats because I heard they can clog. I never had that issue with clogging so I never used it. I suppose I can use it as pH down.
Drip clean has the same ratio but the PeKacid is much stronger because it hasn't been diluted with water and put in a bottle.
Drip Clean 0-0.18-0.6
PeKacid 0-60-20
"Features
This fully-soluble and highly acidic (pH=2.2) fertilizer is formulated for injection and fertigation applications. With “acid in the bag”
PeKacid will clean lines and neutralize high bicarbonate content irrigation waters. It may be used for soil-less media as well as open-field horticultural fertigation applications. PeKacid is easier, safer and more effective than using the conventional application of phosphoric acid."
0-60-20
www.plantprod.com
"Anti clogging action Enhances nutrient uptake Provides acidity to neutralize and dissolve bicarbonates, avoiding clogging of pipes and drippers."