A tale of 2 tanks
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A tale of 2 tanks

This is a discussion on A tale of 2 tanks within the Beginner Planted Aquarium forums, part of the Beginner Freshwater Aquarium category; --> Both tanks are 10 gallons and same dimensions. Tank 1 plants: Primrose Crypt red wendtii Anubias nana Pearlweed Christmas moss lymnophila aromatica Tank 2: ...

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Old 12-21-2006, 12:44 AM   #1
 
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A tale of 2 tanks

Both tanks are 10 gallons and same dimensions.

Tank 1 plants:
Primrose
Crypt red wendtii
Anubias nana
Pearlweed
Christmas moss
lymnophila aromatica

Tank 2:
Primrose
Crypt lucens
Crypt Becketti
Lymnophila aromatica
Ammannia Senegalensis
Green foxtail
Anubias Afzelli (I think, trimmed down to nothing so will be a while before a positive ID can be amde)

Tank 1 growth is absolutely awesome, tank two all plants struggle. Tank ages within 6 weeks of each other with tank 2 being older.

Dosing:
NO3 10ppm, PO4 .77ppm, K 15ppm Sun, Tue, Thur
CSM+B to 0.3ppm iron Mon, Wed, Fri
Mg 10ppm and Calcium 40ppm Sunday after water change
Excel 4ml Sunday after water change and 1ml every day

Lighting is same 48 inch fixture over both tanks evenly distributed. 80 watts with one daylight bulb and one plant grow bulb.
Filters are AC 20 HOB. Bulbs less than 6 months old.
Substrate is exoxy gravel with about 20% plain river run smaller gravel.
Both tanks have crushed coral for pH and KH.

When I test for PO4, NO3, pH, KH and GH the test results are indistinguishable. Tests always show right balance and never a deficiency in anything nor an excess.

Both Tanks:
pH 7.2
GH 8
KH 7-8
PO4 1.5ppm
NO3 15ppm
Ammonia 0
Nitrites 0

Plants in tank 2 show no signs of any deficiencies at all, just stunted growth.

Can anyone tell me what I am doing wrong in the second tank?
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Old 12-21-2006, 01:04 AM   #2
 
I know some plants require more nutrients than other plants.

How are the aromatica and primrose doing in both tanks?
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Old 12-21-2006, 01:32 AM   #3
 
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Tank 1 has no ammannia, is in transition still from emersed form.
Primrose has to be trimmed once every other week and grows 6 inches in 2 weeks or less.

Tank 2 has the ammannia, it is starting to grow but still struggling. I think the roots need to get established before seeing any noticebale growth. The primrose looks terrible and grows about an inch every 2 week. The leaves are small and the stems are thinner.

I did forget one plant in tank 2. I have Hemianthus Callitrichoides floating on some plastic canvas. Could it actually be sucking up that much or hindering the other plants?It doesn't grow very fast at all, even the parts that are emersed so I didn't think it would be a problem or the cause of the problem.

You can kinda see it in the upper left corner of tank 2.
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Old 12-21-2006, 05:13 AM   #4
 
Hmmm. I would have to think it's lighting and/or CO2. Any algae growth on Tank 2? Maybe up the dose on Excel.

How's the growth on the Hemianthus?
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Old 12-21-2006, 09:13 PM   #5
 
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The lighting is the exact same 4 foot shop fixture over both tanks.

The Hc grows slowly. No algaae in either tank except for what is left and hasn't been eaten by the fish yet.
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Old 12-23-2006, 04:27 PM   #6
 
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What is the Ca and Mg levels of each tank a few days after each dose?
When I think of stunted growth this is the 1st thing that comes to mind.

The fish loads in each tank are diff. is may be the cause, but I don't think so..
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Old 12-23-2006, 10:42 PM   #7
 
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Try adding gravel supplement to the 2nd tank. Many of those plants take most of their nutrients from their roots and not the water column.
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Old 12-24-2006, 03:19 PM   #8
 
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Crypts get root tabs in both tanks and so does the Ammannia in the second tank. The GH of both tanks is always between 7-9 and I don't have a calcium test.

Could be the fish loads, unlikely but possible. The BN do get zucchini so they waste could be easier to use than the other tank and just dosing.
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Old 12-26-2006, 05:35 AM   #9
 
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I have encountered an information regarding Ammania senegalensis.
Chris, how are you doing with that plant so far? I'm interested to hear that.:)
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Old 12-26-2006, 07:33 PM   #10
 
the plants look so nice and big!
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