Flipper Deepsee Viewer 4 Inch algae You have two options for

You have two options for dosing:

BacterGen•MD does this by developing layers of bacterial slime to prevent oxygen availability to anaerobic microbes thereby encouraging denitration by conversion of nitrates to nitrogen gas

pyridoxine (vit B6)

accurate and cost-effective way to measure calcium

Flipper Deepsee Viewer 4 Inch algae You have two options forOptical grade magnifying lens with 4" viewing portal is perfect for aquarium photography with focal range approximately 3 to 8 inches. Held in place by strong rare earth magnets for use on tanks up to 5 8" (16mm) tank wall thickness Easily moves around the tank for viewing from any location Great at checking for any early signs of disease or pests on your reef coral or fish! Deep See is Safe for both glass and acrylic!