GrowoniX Deionization Filter Replacement Cartridge, 4.5" x 20" Filter Size:(GROWONIX) 2.5" x 20" and it also provides a

and it also provides a higher standard of equipment safety and lifespan

It is made from the British Columbian kelp

electric heat has no odor

Noise Level: E6 - 33 dB

Automatic Frequency Adjustment

GrowoniX Deionization Filter Replacement Cartridge, 4.5" x 20" Filter Size:(GROWONIX) 2.5" x 20" and it also provides aMixed bed deionization resin for polishing the final bits of TDS from RO water. For those who need absolutely pure water. Great for aquarium systems, or those with certain well water issues. Mixed bed deionization resin to eliminate the final bits of TDS PPM in RO water. For those who need absolutely pure water. Great for aquarium systems, laboratory use, or those with certain well water issues. Available in 2510, 2520, 4510, and 4520 size cartridges.