This homemade diffuser was deployed today and seems to be working great. Used a 5 gal bucket, plastic pasta strainer, sump pump check valve, sizing adapters, and garden hose.
Drilled hole at base with wood cutting bit, then used hose clamp on the inside to hold it in.
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Used circular piece of plastic from butter container to block some of the center holes of strainer.
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Strainer into buck upside down. Got lucky in that it slide just over half way down before taper of bucket stopped it.
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Filled up around sides of strainer with large white gravel, then topped off with pea gravel. Drilled 1/2" holes around side where large gravel lays to allow water in.
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Using garden hose weighted with rebar and brick the diffuser was deployed at a depth of 6 feet, and attached to a Medo LA-100. Creating nice diameter bubble column. Will take under water pictures with fish camera next time what is clear.
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Expensive diffusers and weighted line would of course be the ideal setup, but for around $20 I am happy. The LA-100 is very quiet and uses less power than a 100 watt bulb. Hopefully the rig will provide much needed O2 to the fish.
