API® POND Freshwater Master Test Kit Fountain Nozzles Diffuser stays down easily by

Diffuser stays down easily by filling supplied nylon bag with gravel (gravel not included)

then once weekly for maintenance

Replacement Net for:

Plants and algae cause a temporary increase in pH in the afternoon

All have 1-1/2" male threaded inlets & outlets

API® POND Freshwater Master Test Kit Fountain Nozzles Diffuser stays down easily byTests water for five different parameters that affect the health of freshwater fish: pH, high range pH, ammonia, nitrite, and nitrate. Highly accurate and economical. Includes color cards, 4 test tubes, and holding tray along with complete, step by step instruction booklet. Over 800 tests. Owner's Manual