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CocoPro Bag #3:
HGC741640 is for PreEvolution sysytems (10 in x 4
Pumps up to 1/4 inch solids
Its coated metal guard will not rust or corrode
The 720 increases the wattage from 680 to 720 and includes newer improvements to LED technology
General Hydroponics PRO pH Salt CocoPro Bag #3:General Hydroponics Pro pH adjusters are based on completely different technology than our traditional smaller sized adjusters offering. New non mineral based acids and bases will not add nutrient value like the use of phosphoric acid or potassium hydroxide. They are safer to use as well as compared to mineral based adjusters. This is due to having a zero rating score for all safety categories on the HMIS scale as well as being non corrosive and non
