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Post by Pete D. on Oct 10, 2017 9:46:17 GMT -5
Thanks to the board, I just picked up a 25gallon Grayline for a great price. I have a few questions. How high should the water level be for both pumps to work accurately? Has anyone added a venturi? If so I would guess the best place to add it would be the lower pump. Thanks!! Here is the tank:  |
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Post by fatdaddy on Oct 10, 2017 11:15:45 GMT -5
What you want for that 40
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Post by Pete D. on Oct 10, 2017 11:40:41 GMT -5
I do not want to sell the 40. I would consider a trade for a CLEAN 20-30 gallon SBT2
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Post by Shadslinger on Oct 10, 2017 16:02:21 GMT -5
sent you a msg man.
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Post by Pete D. on Oct 10, 2017 16:20:19 GMT -5
Got it, thanks!
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Post by Shadslinger on Oct 10, 2017 17:30:57 GMT -5
and to answer your qtn yes you want your venturi as low to suspend the bubbles in the water as long as possible
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Post by Ranger1882 on Oct 10, 2017 18:09:02 GMT -5
i have the same tank and i keep the water level just below bottom of filter box for best filtration. You might need to slightly tip tank to get top pump primed but after that it is fine until you turn off. I keep my venturi as close to surface as possible as i have heard the more surface agitation the better. I can keep 25-30 8-10" gizzard shad overnight without any problem but that is typically in the cooler months. good luck!
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Post by Shadslinger on Oct 10, 2017 19:26:00 GMT -5
i have the same tank and i keep the water level just below bottom of filter box for best filtration. You might need to slightly tip tank to get top pump primed but after that it is fine until you turn off. I keep my venturi as close to surface as possible as i have heard the more surface agitation the better. I can keep 25-30 8-10" gizzard shad overnight without any problem but that is typically in the cooler months. good luck! With your venturi low you get more oxygenation of the water because the bubbles float through the water column longer and saturate I guess is the word I'm looking for. The bubbles are going to the top either way to agitate your surface. Cooler water holds more oxygen than warm water letting you keep gizzards longer. Drop that venturi and you'll be able to keep them better during the warmer months as well. |
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Post by Ranger1882 on Oct 10, 2017 19:38:42 GMT -5
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Post by Pete D. on Oct 10, 2017 21:37:38 GMT -5
All good info
I guess what confuses me is the gray line has anventuri on the upper pump. There are two pumps in this tank. One of the downsides of the graylines
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Post by Pete D. on Oct 10, 2017 22:23:50 GMT -5
Ok so the tank essentially has two venturies. The top one is a true venturi with the air tube coming down into the pump outlet. The bottom pump has a dial on it like the keep alive system and introduces air that way. So there is a lot of oxygen transfer in this tank. What I don't like is that the top pump has to pull the debris through it before it gets filtered out, unlike the sbt where the filter is gravity fed and then the pump takes the clean water to send it back into the bait side.
Also this tank is 25 gallons and uses two 500gph pumps. Seems a little overkill....
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Post by Shadslinger on Oct 10, 2017 22:34:02 GMT -5
Pretty good theory and I can understand his logic. I'll have to look into it some more before I'm sold on it. Out of all my bait tank research over the years and ALOT this past month he is the only person I've heard with this logic. Very interesting striperz.
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Post by Shadslinger on Oct 10, 2017 22:37:21 GMT -5
That could be a good setup venturi wise. Dial that bottom one in to tiny micro bubbles for maximum oxygenation. The other one will have medium to large bubbles to scrub the water of harmful gases and give you that surface agitation also.
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Post by FishON on Oct 11, 2017 20:42:44 GMT -5
I had that tank awhile back.. I had issues with to much current flow that would kill my bait. Do everything you can to get the flow rate as low as possible in that small oval tank.
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Post by Pete D. on Oct 12, 2017 7:48:05 GMT -5
I had that tank awhile back.. I had issues with to much current flow that would kill my bait. Do everything you can to get the flow rate as low as possible in that small oval tank. Yea I was thinking about changing out the two 500gph pumps to 350gph pumps. |
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