TDS Meters
	Sort by:      SKU     Product     Price     Default     See details HM Digital TDS Testing Pen ZT-2 Digital Water Purity Tester Designed to measure total dissolved solids (TDS) in water. Great for the home aquarist. Allows easy and accuate testing of R/O water to ensure that membranes are fuctioning properly. List Price: $19.95 Our Price: $14.95save 25% Quantity   1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20  Sale! See Price in Cart  See details FM-2: Filter Monitor with Volumizer The new Filter Monitor is an innovative system to alert when a filter needs to be changed via color-coded lights at the base of the faucet. The battery-powered FM-2 has five timers for a 5-stage system, as well as a water volumizer and programmable set-points and alarms for each function, all in ... Our Price: $39.95 Quantity   1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20  Sale! See Price in Cart  See details DM-1 In-Line Dual TDS Monitor Battery operated Electronic Monitor to determine if R/O or DI unit is working properly. Our Price: $27.90 Quantity   1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20  Sale! See Price in Cart

	Customer comment
	I received my order yesterday. I was very pleased with the timeliness and professionalism in the way my order was handled. I will most definitely be returning to you for my future aquarium needs. Rovert in Valparaiso, IN