Nanostream 6025

[dazed]

So last night I added (2) Nanostream 6025 to my 40g tank; these are the first tunze ph that I have used and all I can say is WOW these little guys sure are nice pumps. It took a while to figure out where to place them, they created a big mess in the tank I have been blowing off the rocks with a turkey baster but apparently had not been doing a very good job of it, lol. I just have a few questions:
1. Anyone think that 2 of these are to much for a 40g?
2. I read that they are not really recommend to use on a wavemaker and I guess I found out last night why, when i started either of the pumps they ran backwards (1) for a solid 5 minutes the only way i could get it to flow the correct way was to cover the grill piece with my hand and then the pump would switch and run correctly anyone else have this issue?? Is this normal operation?? I understand that if I run them on 15 min. intervals it could shorten the life of the ph but I defiantly do not need them to turn on and run backwards??

 

[mvite]

That's never happened with my nanostreams--but I have 2 MJ Mods and they do that when I turn them off and on again. I cover them with my hand like you did--and they go back.

Maybe this hasn't happened to me with the nanos because I never turn them off.

 

[rvitko]

They should not run backwards for so long. The only causes for this I know of is if the voltage is outside the range of 100-130, it takes longer to correct rotation when the volatge is below 110 or above 125. I also know from tests that if the propeller is too big or damaged this can cause it. For example we got replacement propeller assemblies for 50Hz by accident and when I test ran those (they are 20% larger) the pumps spun backwards and had trouble starting. I think this is unlikely but possible. A 60Hz prop has a sawed off appearance to the ends, they are still rounded but kind of stubby. The 50Hz prop is evenly tapered to the ends and longer, the 60Hz version is this prop turned on a lathe.

 

[dazed]

Roger; Well the 2 units are brand new just out of the box; so I would not think that there is a damage issue with the props? Or could there be?

If the wrong prop was installed I sure didn't do it, lol. As far as voltage to the unit is concerned I do not think that is an issue as low or high voltage would be causing other problems with my equipment which it is not.

I'm very happy with the output of the pumps i just would like to get the issue corrected and have them run properly. Do you have any more ideas as to what i could look into? Thanks for the help....

 

[rvitko]

The only other thing could be the shaft is loose. Open the pumps and look at the prop and shaft, the shaft should be fixed in the pump. I know they are new, if anything is wrong it is our fault and I will get it taken care of for you.

 

[dazed]

Roger; thanks for the response I will try and pull one or both of them out of the tank on my lunch break and take a look at what you suggested.

 

[dazed]

Roger; well I pulled one of the pumps out of the tank and snapped a few pictures. I do not know if that will help or not but here they are. Oh and by the way I verified that the voltage is correct at the plug I got a reading of 119.8 today. I checked the shaft in the motor and it does not want to pull out of the housing; but after taking the pictures and re-assembly I plugged it in and it did the same exact thing started running backwards and did not correct itself until covering the outlet. So for fun I unplugged the other one and it reacted the exact same way???? Anyways the pics:

I do love the surface movement that the pumps create!!

I just don't want to have to stick my hand in the tank to correct the prop each time either of the pump is stopped and them restarted. Thank you again for your time.

 

[TOURKID]

i have 2 in my 45 and its just perfect

 

[rvitko]

Everything looks correct. They should normally spin backwards for a few seconds and then correct themselves, it should never take longer than 20 seconds. I am wondering if maybe they just are tight and a few days of running continuously will allow enough wear for them to restart normally. If the drive unit has a very tight fit it may not be able to pull out of the field and resync in the correct direction.

 

[dazed]

Roger; thanks for all your help I guess I will try that. I will run them and let you know what happens, is there any timeframe for warranty stuff through you??

 

[rvitko]

2 years, don't worry about it we have plenty of time.

 

[GSMguy]

2 years wow now you are great thanks Rodger

 

[Fishbulb2]

Do you guys think that the 2 6025's are all the flow you need for your 40 gallons tanks? I also have a 40 and was planning on getting 2 6045's. I only keep LPS and softies and wonder if the 6025's would be enough. The surface agitation looks great.
FB

 

[dazed]

<a href=showthread.php?s=&postid=9020863#post9020863 target=_blank>Originally posted</a> by rvitko
2 years, don't worry about it we have plenty of time.

Good to know 2 years wow and fast, good online support and help; I don't think you could ask for much more.

 

[dazed]

<a href=showthread.php?s=&postid=9022195#post9022195 target=_blank>Originally posted</a> by Fishbulb2
Do you guys think that the 2 6025's are all the flow you need for your 40 gallons tanks? I also have a 40 and was planning on getting 2 6045's. I only keep LPS and softies and wonder if the 6025's would be enough. The surface agitation looks great.
FB

fishbulb2;
I don't know everyone's tanks are different: landscaping,livestock, etc. Everyone I talked with said to get 2 of them; when I first fired them both up it created quite a mess in the tank and I had thought I was doing a good job of blasting off the rocks with a turkey baster, boy was I wrong, everywhere I pointed the pump it moved junk out of somewhere lol. I have noticed that 2 of my corals do not seem to be as open as before. Not sure why yet, and my leather has been acting funny as well. I'm still wondering if it to much flow for the tank but I have been told it is not, guess I have to wait and see.

 

[Fishbulb2]

thanks dazed. But so it certainly sounds like you are not wanting to upgrade to two 6045's instead? It sounds like you are saying if anything, these are providing on the high flow side of things.
Thanks for the input. Maybe I'll get one 6025 for now and see how i like it. Then move to either a second one or a 6045 if I need it.
FB

 

[GSMguy]

its not too much corals get used to the flow trust me
you just need to move them aroud and point them so they dont blow directly on anythink like an lps

 

[dazed]

Well I guess that the corals and I both need to get used to the increase in flow; LOL I have both of them mounted currently on the back wall of the tank and angled upwards for surface movement.

fishbulb2: I see no reason for needing 2 6045 the 2 6025 seem to be moving quite a bit of water as is.

I just hope that the rotation issue of the pumps correct themselves soon.

 

[cerreta]

Dazed, I am having the same problem with 2 6025s too. It is driving me mad. What is the update on yours. Are they still running backwards at start up?

I have a 20 gallon nano with a lot of sugar sand and it blows everywhere when it runs backwards.

The 6045 has an antireverse feature. Any idea what this is, I want to try and DIY one.
Cheers

 

[rvitko]

The 6045 has a prong that sticks out from the cross hatch at the front. The prop, because it has less resistance will fly all the way out and hit this and fall down, it is the fall that gets it spinning the right way. The 6025 does not need this, it does not travel that far due to the extra resistance, it wouldn't do anything if it had one. It travels out and the resistance stops it and it falls down, syncs with the electromagnet and spins the right way.

This has always been the issue with prop pumps, impeller pumps work fine no matter which way they spin, prop pumps have to spin one way. On a new pump the fit is still very tight, with the drag it cannot escape the electromagnetic field to correct it's rotation. If it spins the wrong way it is supposed to fly out and once it breaks contact, fall back and in its fall it spins the right way, like a falling maple seed. It then syncs up with the electromagnet going the right way. If the pump is angled up, you make it harder to correct itself, if it sucks in air this is also the case, air does not offer the same resistance. In upward direction gravity adds to the disadvantage. It will work when the pump is more worn in but at first it is too stiff and the added force will prevent it from correcting itself.

I think you will find that if you angle the pump down a bit more, it can be slightly up but not much, lower it further under water, at least 3 inches, and let it run uninterrupted for a few days it will remedy itself. If not I will get you taken care of.