Bubble counter confusion
Just installed a new needle valve as the one on the regulator is terrible. I'm noticing some strange behaviour in terms of bubble count. It seems like the bubbles are running normally, then it runs very fast, and then very slowly, and then it returns back to normal. This cycle happens regularly.
I think it has something to do with the gas in tube of the diffuser escaping into the main chamber. Almost like it momentarily reduces pressure in the line.
Is this a normal occurrence? I think the same happened with the old valve, just much less extreme. Diffuser is a cheap glass/ceramic one. I'm aiming to run about 100 bubbles per minute.
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ADA mini M low tech with Cherry Shrimp and Dwarf Puffers