HANNA NITRATE LR REAGENT TYPE:MARINE NITRATE LOW RANGE Speed Lock gives you the

Speed Lock gives you the ability to lock in a desired speed on the pump by disabling the control dial protecting you from accidental and not so accidental unwanted changes in speed

Alternate days is even better

depending on coral density

pH balanced

body slime

HANNA NITRATE LR REAGENT TYPE:MARINE NITRATE LOW RANGE Speed Lock gives you theThe HI781 25 are high quality reagents that are pre measured, allowing for users to achieve fast and accurate measurements with their HI781 Marine Nitrate Low Range Colorimeter. These reagents follow a colorimetric method in which the reaction between nitrate and the reagent causes a pink violet tint in the sample.