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Walkabout Fish-Tank, or... How To Take Your Fish for a Walk.

While musing ideas for tank designs, I took a 1.5-gal. clear glass tea-jug w/handle, made sure the drain/pour spout at the bottom was water-tight, rinse-washed it thoroughly with the hottest water I could and added a Tetra Whisper 3i in-tank filter with a sponge over the inlet for coarse mechanical flitration. Since it was air-powered filter, I merely employed a small, battery-powered air-pump--found among fishing supplies in the sporting-goods section of any local superstore--and ran the air-line & hung the pump's clip through the pour/fill hole in the jar's lid.

Now, whenever the hospital-tank was occupied and I needed to quarantine a single fish from the rest... or needed to take one or two to be examined by my local aquatics-veterinarian... I fill the jar with tank-water to just below the filter's spout, place the intended fish inside and add a battery to the air-pump. People would marvel at it as I carried it about, and be amazed at how I made such a "cute" fish carrier w/functional fitration. Even the vet was impressed!

If I were to do this again, I'd look into a jug made of BPA-free plastic--for safety reasons--and see about adding a nano-tank "smart" heater... If I can power it with a reasonably-sized battery.

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We moved all of our fish across the country once, using battery powered bubblers and coolers. When transporting the coolers we drained enough of the water to make them tranportable on a cart.  When we stopped for the night we added dechlorinated water (made in another cooler) and added portable filters.  But this wan't nearly as portable as yours!

Thanks... but it only works well with smaller fish. (3" and under) When Jude, Zira, Puff & Curio became big enough to mate, there wasn't enough cross-space (wall-to-wall) for any of them to fit inside comfortably. And forget tranporting my I.D.-Shark with it... Heck! When I went to give them all to my local LFS, the shark stretched from nose-to-tail across the entire width of the 5-gal. bucket I used, touching wall-to-wall.

Perhaps if I do this again--in a larger form--I'd like to try making one from a 5-gal bucket, with windows made of lexan. That, or get a 2.1-gal. pet carrier from Meijers... and work-out my ideas on it.