I have a marine aquarium. I've been trying to figure out how to raise my pH. It fluctuates around 7.3-7.5. I would like 8.2. I tried macroalgae but they kept dying. I've read about CO2 scrubbers and bought accessories to try them out. The problem with a CO2 scrubber is that you are removing essentially all of the CO2 from the space that the aquarium is in. As a result, the media does not live for more than a week or two. I saw a video that suggested recirculating the air out of the protein skimmer as that air has already been cleaned to some degree. It has been suggested that this will increase the lifespan of the media. There have also been suggestions of using a solenoid or ball valve to let the aquarium computer (assuming you have one) control the pH. I chose to use a ball valve instead of a silenoid due to heating issues from the silenoid. I've been using this product for a few weeks now. When the pH reaches 8.23, the computer turns on the ball valve and it opens, allowing room air into the skimmer until the pH drops to 8.20. The ball valve is then closed. So far it's been solid. I'm considering getting another one as a backup in case I need to replace it quickly. It turned out to be an important piece of equipment. pH control is very important for hard corals in a marine aquarium. I would hate to have a full tank and then lose that little unit and the pH drops below 7 and kills all that expensive stuff in the tank. Highly recommended.
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