TDS Monitors
	Sort by:      SKU     Product     Price     Default     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 If you see this message it means that your browser doesn't support Javascript or it is disabled. Please enable JavaScript in your browser settings for the proper functionality of X-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 If you see this message it means that your browser doesn't support Javascript or it is disabled. Please enable JavaScript in your browser settings for the proper functionality of X-Cart. 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 If you see this message it means that your browser doesn't support Javascript or it is disabled. Please enable JavaScript in your browser settings for the proper functionality of X-Cart.

	Customer comment
	I've tried most of the others and find you guys to have the best prices and by far the best, most personal service I've seen. I'll continue to use you for all of my aquarium needs. Simone in Fairbanks, AK