Nutrient Deficiency ? - The Planted Tank Forum
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post #1 of 7 (permalink) Old 07-02-2016, 12:30 AM Thread Starter
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Nutrient Deficiency ?

Can anyone tell me what nutrient deficiency my tank have currently ?
All new leaves are green and Ok but old leaved become faded away and little darker.
Front edge of the older leaves are little brownish/yellowish.
Most of the plants have no holes at their leaved except tiger lotus.
Tiger Lotus red enough so I guess no problem with Fe in the tank.
I do WC 30%-50% once in two weeks.
Sadly I can't post better pic than the above.




My tank is 60L(2'x1'x1') and its 2 years old.
Growth of the plant very slow and plant don't look too much healthy too.
Due to very slow growth of rotala and ludwigia sometimes algae(small very thin hair like) take over them.
The only source of plant food is fish waste/fish food.
Substrate is backyard soil covered with sand and gravel.
36W 6500K Light.
No CO2.
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post #2 of 7 (permalink) Old 07-02-2016, 04:39 AM
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Quote:
Originally Posted by iAquarist View Post
Can anyone tell me what nutrient deficiency my tank have currently ?
All new leaves are green and Ok but old leaved become faded away and little darker.
Front edge of the older leaves are little brownish/yellowish.
Most of the plants have no holes at their leaved except tiger lotus.
Tiger Lotus red enough so I guess no problem with Fe in the tank.
I do WC 30%-50% once in two weeks.
Sadly I can't post better pic than the above.

My tank is 60L(2'x1'x1') and its 2 years old.
Growth of the plant very slow and plant don't look too much healthy too.
Due to very slow growth of rotala and ludwigia sometimes algae(small very thin hair like) take over them.
The only source of plant food is fish waste/fish food.
Substrate is backyard soil covered with sand and gravel.
36W 6500K Light.
No CO2.
Hi iAquarist,

A better picture would certainly help identify the problem. In the "older leaves are little brownish/yellowish" are the veins or the leaves green and the area between the vein yellowish or are the veins yellow as well.

Iron has little to no effect on the 'red' plants in your tank. The red coloration is more related to light intensity so you may have an iron deficiency.

May I ask why you do not dose any fertilzers?

Roy_________
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post #3 of 7 (permalink) Old 07-02-2016, 12:07 PM Thread Starter
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Thanks for reply!

Quote:
Originally Posted by Seattle_Aquarist View Post
veins or the leaves green and the area between the vein yellowish or are the veins yellow as well.
Not the veins.
outer edge of old leaved the ludwigia becoming yellow/brownish.
And very old bottom leaved become darker green.


I wanted to dose fert but my pocket money don't permit that.
Branded fert like Sechem is totally out of my budget.
Here(in my country) lab grade chemical(KNO3,KH2PO4,K2SO4 etc) available @500gn pack.
And with my little budget I can only afford one chemical only at present.
Tried to find loose but hard luck yet.
And that's why I was asking for only one chem use for dosing in my previous thread.
Though I can afford Rexolin Fe EDTA for iron and already have Rexolin CXK(which have little high Zn I guess).

Can I dose only KNO3 or KH2PO4 with MICROS(Rexolin CXK) ?
Will that make imbalance tank ?

Note: also noticed that old leaved of Hygrophila polysperma become yellowish but new ones are bright light green.
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post #4 of 7 (permalink) Old 07-03-2016, 11:26 AM
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Since you are on such a tight budget I would recommend you redo your tank and follow the walstad method exactly and run a low tech tank. Adding just some of the ferts above would most likely just result in other problems instead. Unless your tank is stocked enough so that only micros are necessary and the light is not to strong. Think it would be a good idea only to chose "easy" and slow growing plants as well.


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post #5 of 7 (permalink) Old 07-03-2016, 03:35 PM
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Hi iAquarist,

I agree with Fissure, a Walstad type natural tank or El Natural would more likely suit you needs and budget at the moment....and the good news is they are typically a less work.

Roy_________
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post #6 of 7 (permalink) Old 07-03-2016, 04:28 PM
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I believe KNO3 would help for you have a lot of stem plants and they are nitrate hogs. I get KNO3 in Spectricide stump remover at a local hardware for aprox. $4. It is 100% KNO3.
Here is a fert calculator You want to increase the nitrates slowly or the fish will be affected.

Have you had your water tested at a pet store?
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post #7 of 7 (permalink) Old 07-04-2016, 08:23 AM
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old bottom leaves should be a light/co2 issue. Since you are on budget, no co2, Reduce lighting. No dosing necessary here, plants seem to be growing. Fish providing all. Add some algae eaters or manually remove or trim nice tops and toss old crap bottoms.
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