I recently bought a used 6025 from a member, and almost didn't purchase it because I thought it'd be a lateral move from my Koralia 2 that I'm now using (out put from both are appr. 600gph). The seller told me of the mod that could double the out put of the 6025, and being the seller was so reputable</em>, I went ahead and purchased the 6025. I was skeptical that the mod would change the out put by as much as the claim, but decided to try it anyway.
Before starting the mod, I ran water in my sink, just enough to cover the Tunze with the output pointed up. I plugged it in and water shot up about one inch off the surface. This didn't seem very impressive to me, and didn't seem like a lot of circulation in my small sink, let alone what it would be in my tank.
The mod consists of taking off the cover to the 6025 and cutting away the circular tube that directs water out of the pump. I do not have the optimum tool to do this, which would be a Drimel with the saw blade attachment, so I used my Makita Screw Gun, with a circular wood wrasp attachment (even though I was working on plastic). I've cut away more than half of the circular "hood" area that forms the directional out put tube. After getting it half-way finished, my battery died in the Makita and I'm waiting for it to recharge to finish the job.
While waiting for the battery to recharge, I thought I'd retest the 6025 for any progress. I fitted the cover back onto the pump, and placed it in the sink in the same position (with out put directed up and level with the water surface). I plugged the pump in and water shot up about 5 inches.
This is a huge improvement over the first test with only one inch head, and I will post later if anymore improvement is achieved when the mod is completely finished.
I know this is highly unscientific, as my mod lacks any hard numbers on the improved gph to back it up, but seems to have excellent results.
In retrospect, I wish I'd taken pictures of the process and results of testing before and after the mod, but can tell you I highly recommend it.
Will post more if the finished mod changes the outcome thus far in any significant way......
Thanks
Before starting the mod, I ran water in my sink, just enough to cover the Tunze with the output pointed up. I plugged it in and water shot up about one inch off the surface. This didn't seem very impressive to me, and didn't seem like a lot of circulation in my small sink, let alone what it would be in my tank.
The mod consists of taking off the cover to the 6025 and cutting away the circular tube that directs water out of the pump. I do not have the optimum tool to do this, which would be a Drimel with the saw blade attachment, so I used my Makita Screw Gun, with a circular wood wrasp attachment (even though I was working on plastic). I've cut away more than half of the circular "hood" area that forms the directional out put tube. After getting it half-way finished, my battery died in the Makita and I'm waiting for it to recharge to finish the job.
While waiting for the battery to recharge, I thought I'd retest the 6025 for any progress. I fitted the cover back onto the pump, and placed it in the sink in the same position (with out put directed up and level with the water surface). I plugged the pump in and water shot up about 5 inches.
This is a huge improvement over the first test with only one inch head, and I will post later if anymore improvement is achieved when the mod is completely finished.
I know this is highly unscientific, as my mod lacks any hard numbers on the improved gph to back it up, but seems to have excellent results.
In retrospect, I wish I'd taken pictures of the process and results of testing before and after the mod, but can tell you I highly recommend it.
Will post more if the finished mod changes the outcome thus far in any significant way......
Thanks
. Good write up! +Karma!
