So today I drilled a hole through my outside concrete block wall and ran 1/4" air line tubing for fresh air to the skimmer. I am also making a diy co2 scrubber with a 64oz ketchup bottle. The tube will fit perfectly through the squirt hole in the cap. 3lbs of soda lime is coming and I will be adding about a pound of carbon in it also. This will be set up and tested on the 125g. As of now it's just the fresh air line. I ran a test today and it read 7.9 at 5pm. Higher than normal cuz the house was open for a few hours. I'll restest around 5pm tomorrow. Here are some picks of the drilled site.
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