Tunze 6025 Mods
- Thread starter stdreb27
- Start date
sly
Active Member
Originally Posted by stdreb27
http:///forum/post/2668501
So has anyone here modded the Tunze and do you have pictures?
Nope, sorry. I've only modded a Maxi-jet.
But I'll bump the thread though...
http:///forum/post/2668501
So has anyone here modded the Tunze and do you have pictures?
Nope, sorry. I've only modded a Maxi-jet.
But I'll bump the thread though...
stdreb27
Active Member
Originally Posted by Sly
http:///forum/post/2668603
I don't know about the Tunze, but on the maxi-jet you can break the magnet as you are trying to get the impeller off the shaft. They can also vibrate if you don't cut your fittings correctly. I guess it's best to just take your time and plan your next move before you make it.
They according to their rep on a different forum build in some friction on the 6025 to slow down water flow for those who need less flow. Which I'm going to try and remove. Here are some pictures from others who have modified this. I think I'm going to try and do the first one. And the second one.
http:///forum/post/2668603
I don't know about the Tunze, but on the maxi-jet you can break the magnet as you are trying to get the impeller off the shaft. They can also vibrate if you don't cut your fittings correctly. I guess it's best to just take your time and plan your next move before you make it.
They according to their rep on a different forum build in some friction on the 6025 to slow down water flow for those who need less flow. Which I'm going to try and remove. Here are some pictures from others who have modified this. I think I'm going to try and do the first one. And the second one.
stdreb27
Active Member
I picked it up tonight, going to try this over the next couple of days. They (tunze) said they built that shrowd to restrict flow for those who don't need 1100 gph. So I'm going to see how it goes. There were some info on making stoppers to keep it from starting backwards but I don't understand the concept so I don't think I'm going to try that.
sly
Active Member
On mine, the stopper is nothing more than a plastic rod that sits close to the impeller. The impeller shaft has some play to it and when the pump starts backwards, the impeller rushes forward (due to the reverse water flow). This causes it to strike the plastic rod and bounce backwards when it hits it. It bounces hard enough to cause the impeller to stop and then rotate the other way.
Whenever you start your pump, there is a 50% chance that it will turn backwards. The stopper is there to force it to turn the correct way.
Whenever you start your pump, there is a 50% chance that it will turn backwards. The stopper is there to force it to turn the correct way.
stdreb27
Active Member
Originally Posted by Sly
http:///forum/post/2669550
On mine, the stopper is nothing more than a plastic rod that sits close to the impeller. The impeller shaft has some play to it and when the pump starts backwards, the impeller rushes forward (due to the reverse water flow). This causes it to strike the plastic rod and bounce backwards when it hits it. It bounces hard enough to cause the impeller to stop and then rotate the other way.
Whenever you start your pump, there is a 50% chance that it will turn backwards. The stopper is there to force it to turn the correct way.
oh now that make sense. They were taking the cross out and trimming the inside down so the blades won't hit it just the shaft. Shortening the main shrowd then putting it back in.
http:///forum/post/2669550
On mine, the stopper is nothing more than a plastic rod that sits close to the impeller. The impeller shaft has some play to it and when the pump starts backwards, the impeller rushes forward (due to the reverse water flow). This causes it to strike the plastic rod and bounce backwards when it hits it. It bounces hard enough to cause the impeller to stop and then rotate the other way.
Whenever you start your pump, there is a 50% chance that it will turn backwards. The stopper is there to force it to turn the correct way.
oh now that make sense. They were taking the cross out and trimming the inside down so the blades won't hit it just the shaft. Shortening the main shrowd then putting it back in.
stdreb27
Active Member
Originally Posted by AlohaMI
http:///forum/post/2670701
I have modded 6025s and if they start in reverse, I just put my hand over the output for a second or two and they immediately correct themselves. This isn't a huge deal for me because I only turn them off for cleaning.
Mine hasn't started in the right direction since I modded it. Did you cut the slots in the bottom too? If you did, does water flow out of them or in?
http:///forum/post/2670701
I have modded 6025s and if they start in reverse, I just put my hand over the output for a second or two and they immediately correct themselves. This isn't a huge deal for me because I only turn them off for cleaning.
Mine hasn't started in the right direction since I modded it. Did you cut the slots in the bottom too? If you did, does water flow out of them or in?
alohami
Member
Originally Posted by stdreb27
http:///forum/post/2671266
Mine hasn't started in the right direction since I modded it. Did you cut the slots in the bottom too? If you did, does water flow out of them or in?
I purchased them from a fellow reefer, so I didn't do the actual mod. The entire inner shroud around the impeller is removed on mine, and I just looked at them and they do not have the extra slots in the bottom. I also felt them, and it is sucking water in from the existing front slots. So I would imagine it would flow in through the extra slots as well. I don't know for sure, but it seems like it would work that way.
When I start mine up, usually one will start correctly and one is in reverse. It's not always the same one though, so I don't know exactly why they do that. It must depend on the exact position of the impeller when it stops.
http:///forum/post/2671266
Mine hasn't started in the right direction since I modded it. Did you cut the slots in the bottom too? If you did, does water flow out of them or in?
I purchased them from a fellow reefer, so I didn't do the actual mod. The entire inner shroud around the impeller is removed on mine, and I just looked at them and they do not have the extra slots in the bottom. I also felt them, and it is sucking water in from the existing front slots. So I would imagine it would flow in through the extra slots as well. I don't know for sure, but it seems like it would work that way.
When I start mine up, usually one will start correctly and one is in reverse. It's not always the same one though, so I don't know exactly why they do that. It must depend on the exact position of the impeller when it stops.
stdreb27
Active Member
Originally Posted by AlohaMI
http:///forum/post/2671295
I purchased them from a fellow reefer, so I didn't do the actual mod. The entire inner shroud around the impeller is removed on mine, and I just looked at them and they do not have the extra slots in the bottom. I also felt them, and it is sucking water in from the existing front slots. So I would imagine it would flow in through the extra slots as well. I don't know for sure, but it seems like it would work that way.
When I start mine up, usually one will start correctly and one is in reverse. It's not always the same one though, so I don't know exactly why they do that. It must depend on the exact position of the impeller when it stops.
hmm, maybe I'll try to cut slots on the bottom too. I'm going to try and get away with 2 of these and about 1000gph return for my flow. In a 58 gallon 3 footer.
http:///forum/post/2671295
I purchased them from a fellow reefer, so I didn't do the actual mod. The entire inner shroud around the impeller is removed on mine, and I just looked at them and they do not have the extra slots in the bottom. I also felt them, and it is sucking water in from the existing front slots. So I would imagine it would flow in through the extra slots as well. I don't know for sure, but it seems like it would work that way.
When I start mine up, usually one will start correctly and one is in reverse. It's not always the same one though, so I don't know exactly why they do that. It must depend on the exact position of the impeller when it stops.
hmm, maybe I'll try to cut slots on the bottom too. I'm going to try and get away with 2 of these and about 1000gph return for my flow. In a 58 gallon 3 footer.
alohami
Member
You should be good with those. I have 2 of the 6025s and a smaller return pump than you're planning in my 3ft. 65g, and I think I have plenty of flow. Just a suggestion on the mod, you could just remove the impeller shroud first and see how you like it. You could always add the extra slots later. I'm sorry I can't be of more help on the slots, but all I can say is I'm happy with mine modded the way they are.
stdreb27
Active Member
Originally Posted by AlohaMI
http:///forum/post/2671744
You should be good with those. I have 2 of the 6025s and a smaller return pump than you're planning in my 3ft. 65g, and I think I have plenty of flow. Just a suggestion on the mod, you could just remove the impeller shroud first and see how you like it. You could always add the extra slots later. I'm sorry I can't be of more help on the slots, but all I can say is I'm happy with mine modded the way they are.
I did that yesterday, there is a SIGNIFICANT difference between that and originally, I put my hand infront of a sieo 820 and the tunze blows harder.
http:///forum/post/2671744
You should be good with those. I have 2 of the 6025s and a smaller return pump than you're planning in my 3ft. 65g, and I think I have plenty of flow. Just a suggestion on the mod, you could just remove the impeller shroud first and see how you like it. You could always add the extra slots later. I'm sorry I can't be of more help on the slots, but all I can say is I'm happy with mine modded the way they are.
I did that yesterday, there is a SIGNIFICANT difference between that and originally, I put my hand infront of a sieo 820 and the tunze blows harder.
stdreb27
Active Member
well I decided what the heck and cut the holes in the bottom of the tube, and water is definitely flowing out instead of in. So I think that was a waist of my time. However underneath the power head always seemed like a dead spot to me so I don't think I mind it very much. However since playing with it. I think I'm going to run three 6025's just in case. My build thread will start shortly.
alohami
Member
Originally Posted by stdreb27
http:///forum/post/2673776
well I decided what the heck and cut the holes in the bottom of the tube, and water is definitely flowing out instead of in. So I think that was a waist of my time. However underneath the power head always seemed like a dead spot to me so I don't think I mind it very much. However since playing with it. I think I'm going to run three 6025's just in case. My build thread will start shortly.
My original thought would be that the water would blow out those slots, but after checking mine and seeing it was drawing water in the existing slots I changed my mind. Just goes to show, usually your first thought is the right one. lol. Oh, well. You learn something new everyday. Thanks for the update!
http:///forum/post/2673776
well I decided what the heck and cut the holes in the bottom of the tube, and water is definitely flowing out instead of in. So I think that was a waist of my time. However underneath the power head always seemed like a dead spot to me so I don't think I mind it very much. However since playing with it. I think I'm going to run three 6025's just in case. My build thread will start shortly.
My original thought would be that the water would blow out those slots, but after checking mine and seeing it was drawing water in the existing slots I changed my mind. Just goes to show, usually your first thought is the right one. lol. Oh, well. You learn something new everyday. Thanks for the update!