JBJ Auto Top Off Water Level Controller auto shut off valve kit will damage the cycling process also known as the will damage the cycling process and in our experience takes too long to cycle and cycles the wrong nutrients dry seeded rock will not properly cycle ammonia because it is the wrong species of bacteria)To seed Biological Filtration in new aquaria: Add 30 ml (6 capfuls) of MicrōBacter Start XLM per 25 US gallons (95 L) of aquarium water the digital display prevents a parallax error (observing the wrong measurement due to the angle of view) and is optimized for a wide range of environmental temperatures Q: How large of a pump can I plug into the A Pump Safety Protection