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El Natural Diana Walstad's low-maintenance, soil-based 'El Natural' method for keeping plants and fish.

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Old 02-22-2019, 03:30 PM   #11 (permalink)
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Default air and flow pump

Hi there, I thought I'd share this little gizmo I made to get some air into the tank, maybe it can be of use to anyone:


In order to get the plants a bit more oxygen, I put in a small waterpump (superfish aquapower 380), but I figured i wanted an airpump as well. To avoid having yet another electrical device hooked up and spending yet another €15, I made a little attachment to the pump, that sucks in air from above the watertable through the transparent tube by means of the waterflow through the green tube. Works like a charm and gives both flow and oxygen I'll make a nicer version of it using a 3D printer later on.

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Old 02-23-2019, 11:48 AM   #12 (permalink)
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Default Re: air and flow pump

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In order to get the plants a bit more oxygen.
Whoa here! What makes you think that your plants need oxygen in the water?

This kind of aeration might be helpful to provide fish with oxygen, but not plants.
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Old 02-23-2019, 01:39 PM   #13 (permalink)
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Default Re: new 65G Walstad tank - with pictures!

yeah, I figured that out today too guess I got a bit too excited about the idea for the cheap and simple solution for aeration. Whilst getting my foot out of my mouth, I'm thinking I can hook up a DIY CO2 generator (yeast/water/sugar) to the air input instead while the fish are building up confidence to come in my tank.
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Old 02-23-2019, 03:04 PM   #14 (permalink)
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Default Re: new 65G Walstad tank - with pictures!

This type of device doesn't work with most DIY CO2 systems. It causes some suction in the CO2 line, and that can lead to sucking some of the yeast/sugar water into the tank. A much better way to do this is to stick the CO2 line into the water pump input screen. That doesn't cause any suction, and just lets the natural pressure of the CO2 cause the CO2 to bubble into the pump, where the rotor will chop it up into much smaller bubbles - possibly with some noise.

This is how I get my DIY CO2 into the tank water.
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Old 02-24-2019, 01:05 PM   #15 (permalink)
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Default Re: new 65G Walstad tank - with pictures!

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That doesn't cause any suction, and just lets the natural pressure of the CO2 cause the CO2 to bubble into the pump, where the rotor will chop it up into much smaller bubbles - possibly with some noise.
ha, that makes sense, and sounds much better. I'll have a go at it once I have my green algae under control :s (probably too much light, I'll try a light-less regime first, UV lighting second)
I'll report back

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Old 03-16-2019, 02:00 PM   #16 (permalink)
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Default Re: new 65G Walstad tank - with pictures!

well, I got rid of the green algae by cutting the light entirely for two days and then to ~3 hrs a day. However, after I got rid of the algae, plantgrowth was almost 0 for the last two weeks. I investigated and the plants had developed only very small roots. I think the sand was too fine and thick (2" in places), and the substrate too shallow (< 1"). In the time since I started this thread (about a month) the substrate seems to have gone almost fully anaerobic, judging by the smell after I tore the tank down. So I've started again, and will continue reporting on my adventures in a new thread: https://www.aquaticplantcentral.com/...econd-try.html

thanks for all the advice so far, I'll use all of it in my new setup!
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Old 03-17-2019, 07:47 AM   #17 (permalink)
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Default Re: new 65G Walstad tank - with pictures!

Good luck on the next one!
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Old 03-23-2019, 03:24 PM   #18 (permalink)
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Default Re: new 65G Walstad tank - with pictures!

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well, I got rid of the green algae by cutting the light entirely for two days and then to ~3 hrs a day. However, after I got rid of the algae, plantgrowth was almost 0 for the last two weeks. I investigated and the plants had developed only very small roots.
Please don't use the light blackout regimen. Plants that don't have light can't photosynthesize and keep their roots safely oxygenated. Plants will suffer or die when the substrate goes severely anaerobic.

A UV filter will kill green water algae in a couple days with no side effects. It's one of the few gadgets that I believe is totally worth the price!
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Old 03-29-2019, 10:47 AM   #19 (permalink)
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Default Re: new 65G Walstad tank - with pictures!

thanks for the advice Diana!
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Old 04-03-2019, 01:43 PM   #20 (permalink)
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Default Re: new 65G Walstad tank - with pictures!

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It would be very unusual if you found you had "too many plants". In fact El Natural tanks may never see that happen.
I dunno... you sure bout that? Couldn't resist...

Haven't posted here in awhile. This thank is 3 years old. Getting ready to tear down for a redo. It's a jungle!

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