The Optimax is the most popular filter in the Graf filter lineup.
An excellent filter for both residential and small to medium sized commercial rainwater harvesting installations. The Optimax® filter provides a highly efficient, low maintenance, self-cleaning solution.
Vent Cap with Stainless Steel Screen 2" Vent cap with 12 mesh 304 stainless steel screen. Can be extended from underground cisterns with 2" PVC and a 2" bulkhead fitting to allow proper oxygenation of captured rainwater.
Rain Harvesting Pty Tank Gauge Tank Level Monitor The RainHarvesting Tank Gauge™ is a water level indicator that is simple and easy to install. Suitable for all vented tanks up to 100" in height. Features an easy-to-read display dial and utilizes a weight float, suspended on a string line to provide accurate readings. Gauge is fitted to the tank via two screws provided.™
Rainharvesting Yard Sign Running your sprinklers while municipal water restrictions are in effect is one of the great benefits of rainwater collection systems. But if you have this sign in your yard, your neighbors and code enforcement officers will know that you're doing your part by irrigating with harvested rainwater.