For this build, I used the following items/materials:
> 1x silly named plastic food storage jar from Ikea (pack of 3 for £5-ish)
> 1x unbranded aquarium air pump, including 3m silicone airline, non-return valve and diffuser stone (ebay at £5 inc postage).
> 1x 6mm airline diffuser kit (£2.99 from local pet shop)
> 2x Flow control valves (£0.80 each from local pet shop)
> Sugru - my most favourite thing in the world!
> Green food colouring (to add to water during first pump test run)
Tools involved in build:
> Bench drill w/4mm HSS drill bit
> Elbow grease
Step 1: Time to Drill!
For these parts, I needed a 4mm drill bit. So, once I marked the jar with my trusty sharpie I began to drill. (apologies again for lack of photos, I really should have started snapping sooner). I drilled slowly and carefully to ensure that I did not slip or mank up the plastic, as I hate faffing around trying to clean up plastic once it has been messed up.
Step 2: Stuff the Valves in and Apply Copious Amounts of Sugru.
As you can probably see by the pictures, I attached the inner pipe, non-return valve and inner diffuser tube prior to applying the Sugru. This was just to make things a tad easier in the long run.
Step 3: Adjust and Fix Diffuser Tube Position
Step 4: Test Run!
Fingers crossed.... *power on*
As you may have seen, it seemed to perform quite adequately for the purpose it was intended for. The only slight problem (not caught on camera) was that there was a tiiiiiny leak coming from the outlet valve. This was not a major problem to fix, I just removed the sugru and re-applied some more. I should have taken a bit more care at first when inserting the valves - I did not ensure that it was stuck down as well as it needed to be. I have since tested it again with the newly sealed valve and it functions fantastically.
Step 5: To Be Continued...
Any feedback at all is welcomed - either regarding the build, or this instructables post as this is my first time.