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Old 11/06/2019, 01:42 PM   #1
CTaylor
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Join Date: Nov 2001
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NANOSTREAM 6040 -- too strong for 35 gallon?

Hi Roger

This pump (with controller). I see min flow is less than 60 gph. I'm asking because I'm seriously thinking of getting a pair (plus the y cable!). For wave action in my 35 gallon tall. It's not a reef at this point. It has two orange spot file fish -- the tank is for them mainly -- it's a tall tank b/c it used to house seahorses >> not anymore. It will likely be mainly slower fish along with my neon gobies in there. Maybe some corals at some point.

Anyhow, I'm just making sure that I can have a low enough flow that it can be more overall gentle. I know the immediate outflow will be stronger, but passed that over most of the tank. I'm sure it will be ok. But I read this one review lol that said it was too strong for his nano 20 gallon and was trapping fish in the flow (weird???!).

TY!


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Old 11/06/2019, 03:01 PM   #2
rvitko
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I would assume the user who said it was too strong did not turn it down, this pump can run so slow the flow is barely a trickle, you can practically watch the propeller spin at the lowest speed. My main concerns would be that the propeller is unshielded, basically, the propeller is out in the open, their is no grid to protect it. It is made this way as the flow rate is the maximum possible for the size of the outlet and any restriction would reduce flow. It has an electronic safety and that works fine in most cases, any obstruction and it stops, but a very small neon goby would definitely be at risk. You can for example remove the flow deflector and add the protective grid, but the cost is reduced ability to direct the flow and losing about 100 gph. Without the deflector you have to turn the whole pump and that limits you to along a wall.


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Roger Vitko
Tunze USA

"He's for every one of us, stands for every one of us, he'll save every man, woman and child in a mighty Flash!"

Current Tank Info: 210 gallon planted tank with Altum Angelfish
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Old 11/06/2019, 03:26 PM   #3
CTaylor
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Quote:
Originally Posted by rvitko View Post
I would assume the user who said it was too strong did not turn it down, this pump can run so slow the flow is barely a trickle, you can practically watch the propeller spin at the lowest speed. My main concerns would be that the propeller is unshielded, basically, the propeller is out in the open, their is no grid to protect it. It is made this way as the flow rate is the maximum possible for the size of the outlet and any restriction would reduce flow. It has an electronic safety and that works fine in most cases, any obstruction and it stops, but a very small neon goby would definitely be at risk. You can for example remove the flow deflector and add the protective grid, but the cost is reduced ability to direct the flow and losing about 100 gph. Without the deflector you have to turn the whole pump and that limits you to along a wall.
TY ROGER
What I may do is what I did for the teeth (in flow) to my drain box. To prevent gobies from going in it, I laced secure ties as a barrier/fence to make it so the drainage wide and tall slits are now small slits that they can't fit through. I kwno this will lower flow based on same propeller speed.
Or I can carefully wrap the thin filter sponge sheet material I have aroudn the intake. >>>if that gets clogged to fast, then I'll go and try the secure ties I mentioned above. Though I think the neon gobies would be fine actually. *For instance in my reef tank with the TUnze 3 I still have no screen etc to prevent anyone from entering. I had like that in my other tank. so for over 2 years, no one has been damaged. Except one aptaisia eating file fish (a small one). I have another one, but I'm still secure that even he will be fine. So i'm not too worried even without a strainer of some type. >> esp since it's lower prop speed on this compard to tnze 3 and the enterance seems to have thinner 'slits'

THANK YOU!!


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Old 11/06/2019, 03:27 PM   #4
CTaylor
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Quote:
Originally Posted by rvitko View Post
I would assume the user who said it was too strong did not turn it down, this pump can run so slow the flow is barely a trickle, you can practically watch the propeller spin at the lowest speed. My main concerns would be that the propeller is unshielded, basically, the propeller is out in the open, their is no grid to protect it. It is made this way as the flow rate is the maximum possible for the size of the outlet and any restriction would reduce flow. It has an electronic safety and that works fine in most cases, any obstruction and it stops, but a very small neon goby would definitely be at risk. You can for example remove the flow deflector and add the protective grid, but the cost is reduced ability to direct the flow and losing about 100 gph. Without the deflector you have to turn the whole pump and that limits you to along a wall.

*Theres no reason I cant use a y connector, right? and have the same alternating flow idea as the stream 3, right?
TY


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Old 11/07/2019, 09:38 AM   #5
rvitko
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Yes, you can use the Y connector.


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Roger Vitko
Tunze USA

"He's for every one of us, stands for every one of us, he'll save every man, woman and child in a mighty Flash!"

Current Tank Info: 210 gallon planted tank with Altum Angelfish
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Old 11/08/2019, 11:36 AM   #6
CTaylor
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Quote:
Originally Posted by rvitko View Post
yes, you can use the y connector.

ty


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