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Old 09-01-2018, 11:09 AM   #11 (permalink)
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Default Re: F's e(im)mersed tanks

Thanks @mistergreen ... Fe and KNO3 did little.









Rest of the tanks is still doing well.





Going to hit it with some MPK , lets see what the phosphates do.

Later Ferdie
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Old 09-02-2018, 04:10 PM   #12 (permalink)
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Default Re: F's e(im)mersed tanks

Oh, looking at your plant's dark veins and pale leave, that's a Magnesium deficiency. Anubias needs a bit of Calcium too for their rigid leaves.
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Old 09-02-2018, 05:16 PM   #13 (permalink)
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Default Re: F's e(im)mersed tanks

Indeed ... will add more dolomite, I am starting to suspect that because the water only flows over the roots all the nutrients are not 100% available as they would be in the aquarium.

Later Ferdie

PS added a spoon of epson salt ... lets see in a few days.
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Old 09-05-2018, 02:57 PM   #14 (permalink)
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Default Re: F's e(im)mersed tanks

Look like you have put a lot of planning into the layout of the emersed setup. Quite natural looking.

Hydroponic is simply soil less growing.

Technically speaking, planted tank using gravel, flourite, non nutrient absorbing clay based substrate, inert substrate is hydroponic.

Things like anubias, ferns, moss growing on wood can be logically group as hydroponic growing.

plants can absorb nutrients through the leaves, rhizome and stems.

From looking at the coffeefolia, I agree with green this is a Mg issue.

Looking at the Buce, and the yellow anubias(?) also point to Sulphate issue. The leaves look rather pale for new growth.


Do you do any water change? Do you test for pH and nutrient concentration?

You can do weekly 100% water change and use a 1 dose approach EI method right after each water change.
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Old 09-05-2018, 08:49 PM   #15 (permalink)
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Default Re: F's e(im)mersed tanks

Thanks for the input @edge
MgSO4 I think is the ticket ...

the golden anubias, one will have to wait and see with new leaves ..





as for the rest











They are all looking a little greener.

I have not done a WC in a while. But TDS is very very very high 570 ppm. So the idea is to do a flood leave that for a few days then a drain. Not sure if all the fish will get back to the water but worth a try.

Once I have done the flood and drain - I will look at EI as a regime .. clearly one will look at the amount of water in the tank and not the entire tank volume

Later Ferdie
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Old 09-06-2018, 06:41 AM   #16 (permalink)
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Default Re: F's e(im)mersed tanks

If the water trickling down is pump up from the water on the bottom of the tank then the plants is getting the nutrients. All you have to do is add the nutrients into the tank like EI method.

Shouldn't need to do a flood and drain. You may end up with the plants putting out submersed growth with flood and drain if you leave the tank flooded for a few days at a time.

Do you know what 570 ppm is made up of? Is this naturally out of the tap or were things in the water to raise the ppm?

I suggest doing a water change first before adding anything else. I didn't know you have fish in there and I am not sure what the 570 ppm is made up of.
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Old 09-06-2018, 07:53 AM   #17 (permalink)
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Default Re: F's e(im)mersed tanks

Doing a water change might be a good thing. Over abundance of a nutrient can actually block other nutrients from being processed by the plants. That's the danger of EI regime with no water change.
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Old 09-06-2018, 09:25 AM   #18 (permalink)
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Default Re: F's e(im)mersed tanks

I think his substrate is leeching into the water. What are you using for substrate?

Do you know what is the pH in your tank?

I wouldn't do more than 50% water change at a time given there are fish in the tank. The values from tap water and tank water may have a big difference.

If you can, test the pH and ppm of the tap water and then test the tank water.

This will give you an idea of how much was leech / added to the tank.

I keep the ppm around 350 ppm in my fish less emersed setup. My tap water comes out at 25 ppm but my emersed setup uses 100% RO water to remove the carbonate buffering. I have diatomite in my emersed setup which raise the pH up.

Edward back then suggest 400 to 600 microsiemens for herbs. Xema suggest similar range for keeping emersed cryptocoryne as well.

At 400 to 600 microsiemens and weekly water change, you shouldn't see deficiency unless the concentration of certain element is way too much.

https://www.easycalculation.com/unit...conversion.php

Last edited by EDGE; 09-06-2018 at 10:03 AM..
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Old 09-07-2018, 09:40 AM   #19 (permalink)
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Default Re: F's e(im)mersed tanks

Tanks has loads of old wood, substrate is a mix of zeolite, LECA and some Langa soil

So I suspect a very low pH.

hmm Diatomaceous earth - sure I have a few kg - will add some just cause thanks.



Think the Mg and SO4 did the trick ...



That said a WC is required.



Hopping these guys do not eat all the plants - and rather take down the snails ...





Seems like things have rooted well.

30 min in and they have just gone past the normal water level.

Later Ferdie
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Old 09-07-2018, 10:14 AM   #20 (permalink)
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Default Re: F's e(im)mersed tanks



finally they are hunting





Later Ferdie
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