Hey Tonzz, my first thought was "that ought to do it"
also, are those fishing weights made of lead? If so would one need to be concerned about that leaching? Wouldn't the cement work by itself?
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| Airstones. http://byap.backyardmagazines.com/forum/viewtopic.php?f=8&t=25615 |
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| Author: | Tonzz [ Jul 27th, '15, 09:34 ] |
| Post subject: | Airstones. |
For better airation in my FT I got a couple of large aquarium air-stones and dropped them in, Bugga they wanted to go end up...., ha fixed that piece of 20mm PVC pipe filled with fishing weights, trying out cement (from another job) caps on either end of pipe and zip tied to air stone. flat on the base all good. |
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| Author: | superdave50 [ Jul 27th, '15, 10:31 ] |
| Post subject: | Re: Airstones. |
Hey Tonzz, my first thought was "that ought to do it" also, are those fishing weights made of lead? If so would one need to be concerned about that leaching? Wouldn't the cement work by itself?
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| Author: | Tonzz [ Jul 27th, '15, 11:23 ] |
| Post subject: | Re: Airstones. |
leaching? Leaching in PVC pipe I hope not. Cant see how, ah well if goldies snuff it, I guess thats something to consider |
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| Author: | Colum Black-Byron [ Jul 27th, '15, 11:28 ] |
| Post subject: | Re: Airstones. |
Tonzz wrote: leaching? Leaching in PVC pipe I hope not. Cant see how, ah well if goldies snuff it, I guess thats something to consider I think he meant the fishing weights. Probably a good point, I'd swap them over to a few rocks or something like that. I'm pretty sure they are made of lead. |
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| Author: | Sleepe [ Jul 27th, '15, 13:39 ] |
| Post subject: | Re: Airstones. |
Try marbles (no glueing the endcaps) and I think Rupe also recommended ceramic insulators 
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| Author: | Tonzz [ Jul 27th, '15, 13:43 ] |
| Post subject: | Re: Airstones. |
Sleepe wrote: Try ceramic insulators haha the wife goes around hunting them. Living in rural SA, her car has a couple cold chisels, hammer, cordless saw, damn she wont miss a few.  
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| Author: | Food&Fish [ Jul 27th, '15, 14:12 ] |
| Post subject: | Re: Airstones. |
Air stones are what kill many an air pump and air pump that runs on 000 pressure will last a lot longer My current air pump runs into a 3/4 in stainless pipe with a few 1/16 holes in it the only pressure on the pump is the depth of the tank Had a bloke with a 4 outlet pump and because he dident need all the air he just blocked off 2 outlets and then wondered the the pump failed every 4 months or so |
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| Author: | Tonzz [ Jul 27th, '15, 14:59 ] |
| Post subject: | Re: Airstones. |
The PVC pipe off cuts have the fish weights inside them, then capped both ends, how can the lead leach out. Not nit picking but Food&Fish can you post pics of your pump and stainless pipe work. I'am confused because Cheidys shop sells Air pump with airstones, so with all their knowledge why are they selling them if likely to cause break-downs. Again Iam not picking fights or arguements. |
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| Author: | Sleepe [ Jul 27th, '15, 15:05 ] |
| Post subject: | Re: Airstones. |
Think I am with F&F on this one. I would also like to see a graph on the efficiency of airstones over time. Most air pumps are PDP's and I think bioslime kills them. Only imho.
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| Author: | Colum Black-Byron [ Jul 27th, '15, 15:16 ] |
| Post subject: | Re: Airstones. |
Tonzz wrote: The PVC pipe off cuts have the fish weights inside them, then capped both ends, how can the lead leach out. Not nit picking but Food&Fish can you post pics of your pump and stainless pipe work. I'am confused because Cheidys shop sells Air pump with airstones, so with all their knowledge why are they selling them if likely to cause break-downs. Again Iam not picking fights or arguements. If the lead isn't coming into contact with the water, it should be fine. Just be aware lead is quite lethal to fishies. |
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| Author: | cathode [ Jul 27th, '15, 19:28 ] |
| Post subject: | Re: Airstones. |
I'm using a pair of 18" long airstones in my tank. They don't seem to affect the pump much. Not a scientific method, but I noticed after attaching the hose to the airstone, the pitch of the sound the pump was making remained about the same. If the pump motor was straining you can usually hear a change in the noise it makes. |
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| Author: | Food&Fish [ Jul 28th, '15, 07:04 ] |
| Post subject: | Re: Airstones. |
Tonzz wrote: The PVC pipe off cuts have the fish weights inside them, then capped both ends, how can the lead leach out. Not nit picking but Food&Fish can you post pics of your pump and stainless pipe work. I'am confused because Cheidys shop sells Air pump with airstones, so with all their knowledge why are they selling them if likely to cause break-downs. Again Iam not picking fights or arguements. Not much to see here goes 
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| Author: | Charlie [ Jul 28th, '15, 07:16 ] |
| Post subject: | Re: Airstones. |
Depends on what type of air pump you have. A piston pump requires a 10-20% loading as they are designed to run against a back pressure otherwise they free-stroke, operate at higher temps and rattle themselves to failure. To work this out you need to know the L/m of your air diffusers, which usually only comes with better quality ones. The cheap chinese stuff could be anyones guess. So as an example, if you have a 70L/m piston pump you would use 2 x 20L/m air diffusers or 4 x 10L/m air diffusers. |
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| Author: | Food&Fish [ Jul 28th, '15, 07:24 ] |
| Post subject: | Re: Airstones. |
cathode wrote: I'm using a pair of 18" long airstones in my tank. They don't seem to affect the pump much. Not a scientific method, but I noticed after attaching the hose to the airstone, the pitch of the sound the pump was making remained about the same. If the pump motor was straining you can usually hear a change in the noise it makes. You don't really hear much of a noise change but they definitely get hotter In my first system I had an electromagnetic pump load it up and it got hot and played up put in a main line with a valve on the end to bypass air not needed then you turn it off till the stones start bubbling and the rest bypasses that pump was still running when I sold the house Yes over time I mucked with other pumps just cos I could But always went back to the electromagnetic |
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| Author: | Food&Fish [ Jul 28th, '15, 07:27 ] |
| Post subject: | Re: Airstones. |
Charlie wrote: Depends on what type of air pump you have. A piston pump requires a 10-20% loading as they are designed to run against a back pressure otherwise they free-stroke, operate at higher temps and rattle themselves to failure. To work this out you need to know the L/m of your air diffusers, which usually only comes with better quality ones. The cheap chinese stuff could be anyones guess. So as an example, if you have a 70L/m piston pump you would use 2 x 20L/m air diffusers or 4 x 10L/m air diffusers. Water 1 meter deep will give you a certain loading |
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