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What goes in a 10 gallon without turning it into a washing machine?

On the ratings: filters are rated optimistically and actual flow through media at real head height is usually well under the number printed on the box, so a unit rated for 20 gallons on a 10 is less absurd than it sounds. That said, a betta does not need turnover, he needs oxygenation and biological media, and a sponge does both without the noise.

118 · in/pet-supplies ·

Free utility audit or pay for a blower door test - what did the paid one find that the free one missed?

Did both on the same house, six months apart, so this is a direct comparison.

Free utility walkthrough: LED bulbs, a low flow shower head, a pipe insulation sleeve, and a recommendation to add attic insulation. All fine, all things I knew.

Paid blower door and imaging: found that the attic hatch, three recessed light housings and the wall cavity behind the stair bulkhead were all open paths to the loft, and that a section of duct in the crawlspace had come apart entirely. It came with a before number and a target number for air changes, so the air sealing work had an outcome I could verify rather than a feeling.

After air sealing, the retest was dramatically tighter and the top of the stairs stopped being a wind tunnel. The insulation the free audit recommended would have been laid straight over the leaks and done very little.

201 · in/home-energy ·