Homemade gravel cleaner
- Thread starter matt201985
- Start date
The bigger siphons sure have more suction, but I have tanks with fry, more delicate species, lots of nooks and crannies, etc that require a narrower tube, shorter tube, etc. I fill all of my tanks with my python most of the time, suction a few with the python, others with different sized vacuums according to their needs. I have one big boy that I use for a holding tank downstairs that moves an astounding amount of water, I use it on the holding tank for my overwintering pond fish -- the comets and koi are safe with it but it would suck up whole schools of tetras. 
Without being able to measure this is just my guess...
Nylon fitting with 1/2" NPT threads x hose barb (the HB looks too small to be half inch... maybe 3/8"? ) You would need a 21/32 (tight fit) or 23/32 (little looser) drill bit to drill out the cap for it to thread in. Not sure where *you* would find that exact fitting but I get mine at a Hydroponic store (different areas, different stores ect). They are cheaper than the equivelant fittings from hardware stores. For drill bits that size, try stores that sell metal working tools. If you wanted to use something other than a bottle and cap you may need a pipe tap... try the same places as the drill bit. Alternately, for a pipe tap you could also talk to a machine shop. All of mine are old dull ones from work and are no good for metal anymore. We were just going to throw them out but they still work great for PVC.
Oh, make sure the tap is NPT (= 11.5 TPI) and not a NPSC (=14 TPI). The latter isn't all that common but just incase.
Chris
On second thought... the hose barb does look to be 1/2"...
Nylon fitting with 1/2" NPT threads x hose barb (the HB looks too small to be half inch... maybe 3/8"? ) You would need a 21/32 (tight fit) or 23/32 (little looser) drill bit to drill out the cap for it to thread in. Not sure where *you* would find that exact fitting but I get mine at a Hydroponic store (different areas, different stores ect). They are cheaper than the equivelant fittings from hardware stores. For drill bits that size, try stores that sell metal working tools. If you wanted to use something other than a bottle and cap you may need a pipe tap... try the same places as the drill bit. Alternately, for a pipe tap you could also talk to a machine shop. All of mine are old dull ones from work and are no good for metal anymore. We were just going to throw them out but they still work great for PVC.
Oh, make sure the tap is NPT (= 11.5 TPI) and not a NPSC (=14 TPI). The latter isn't all that common but just incase
. Chris
On second thought... the hose barb does look to be 1/2"...
Last edited:
Oh, make sure the tap is NPT (= 11.5 TPI) and not a NPSC (=14 TPI). The latter isn't all that common but just incase .
.
. Chris
