Ro Replacement Filter Kits

…yet fully cycled and you should not add fish. To replace bacteria killed by extensive cleaning of substrates and surfaces Add 10 to 30 ml per 25 US-gallons (95 L) depending on perceived damage to filter bed, and ammonia level. To replace bacteria killed by medications, overcrowding or emergencies…

…on the packaging and read results. We suggest replacing the carbon blocks if you get any reading above zero. Readings overzero are an indication that the carbon blocks ability to treat for all types of contaminants has been depleted. Absolutely replace carbon blocks once the reading surpasses 0.5ppm