Alternanthera reineckii Dying

[Bhu]

Wow look at that BBA! A stunning tank arrangement.

Using RO is fine but you need to re-mineralise it with something like this... http://www.warehouse-aquatics.co.uk..._campaign=wa&gclid=CJ3ayaXb48ECFaIewwodhbwABQ
That's what I do.

As ian-m has said you will need to work on your flow as that's what distributes the co2 and nutrients to your plants. If its insufficient then what you are experiencing happens.

 

[Diogo Reis]

Bba is controlled is not growing annymore and i will use excel and sae are eating!

 

[Diogo Reis]

I know but he said but he said to that the other plants were ok so probably photassium was ok.
But rotala green, rotala rotundufolia, hottonia, all this plants on lower part are too dark..... That why i ask it.
Already have 108watts and co2 at nught goes from 7,5 to 6,5 with kh(3/4) it is suppost to go to 6?.
Im just waiting for up atomizer because i dont have nothing right now but im using the filter(mechanic part) to do like a reactor.

 

[Diogo Reis]

Just a little photo

 

[Bhu]

That really is a lovely looking tank. I see that you have a powerhead on the side. Where is your spray bars? I think that if you have the spray bars along the whole length at the back pointing horizontal to the front such that when its above water it can make it to the front then your flow/ distribution problems will be over. I think that the power head will be messing with the flow and hence distribution of co2 and nutrients.

 

[Diogo Reis]

Thank you.
Thar spraybars are there. You can see them.
My experience with this spraybars like this is telling me that the lower place on the back is not taking co2 but yes the top and all the front..
I think that the perfect flow is like a circle...
One outflow place on the top back right and annother on front top left..

You can see on the photo that hottonia lower part(the plant on the left front) is darker.

 

[Bhu]

I think that the best circular flow is from back to front. This helps as tanks usually slope to the back. Any side flow especially as powerful has the one you have there will mess with the circular flow.

Look at Clive's post here about 5th down...

http://www.ukaps.org/forum/threads/flow-question.26532/
That's what im trying to explain...

 

[sciencefiction]

Dont you think that can be phosphate?? The deficiency of phosphate makes the lower part dark.. Im dosing 1/16 tsp. Its the recomended for my aquarium.. But he is super planted...

I thought so from the very first picture used to open the thread. Right now, it's hard to tell to be honest exactly what's going on. You've got to plant a healthy all over stem planted and then monitor. If you've got previously damaged leaves on the lower parts of plants for one or another reason, they'll keep getting deteriorated so they are no longer indicator of macro deficiencies, they are just rotting. As for darker and lighter colour, I doubt it you'll get away with that little if its a phosphate deficiency.

 

[Diogo Reis]

Two days ago i started to dose 1/8 of kh2po4(i was adding 1/16stp) and today the leaves have much more the red collor on the bottom. I dont know if its this but i hope...
In the same way one guy here that have a perfects alternanthera in his aquarium, he said that dose 20ppm of nitrates and much more phosphates and potassium..
I think that i will dose more...
I was adding 1/4tsp of kno3 and now i will dose 1tsp
I was not adding potassium sulphate but now i will add 1/4tsp.
Do you think that this dose calcolations are ok? Its not necessary? I need oppinions...
I think that dosing too much fertilyzers thats not a problem, but i dont want to waste.

 

[Diogo Reis]

Can you tell me what is this difiency?
My mix of trace is: 250ml of water, 10g of traces, dose: 15ml x 3/week for my 200L aquarium.

 

[Diogo Reis]

Anyone?

 

[Bhu]

You do have a lot of plants maybe more nutrient is needed. Mg and Iron come to mind. Also more co2 wont go amiss...

What is the flow like in the area of this plant?

 

[Diogo Reis]

Its good, i have a inflow bar near, so, the water will certnly move in this place.
I have many plants but im adding tom barr EI fertilyzing, its suppost to give me for all the plants

 

[Jose]

Looks like iron defficiency to me maybe. If its coupled with algae then it could be low nitrates. Just dose full EI.

 

[Diogo Reis]

What is full ei?

 

[Jose]

EI=Estimative/estimated index.

 

[Diogo Reis]

I know what is ei i just asked you what is the 'full ei'.
I said that i was dosing the tom barr ei(http://www.theplantedtank.co.uk/EI.htm). This is not enought?

 

[Jose]

Oh sorry for that. Here is the link:
http://www.ukaps.org/index.php?page=dosing-with-dry-salts
How much iron are you dosing? It ought to be around 0.5 ppm.
Do you dose on alternate days?

 

[Diogo Reis]

For the traces im doing:
500ml of water
30grams of traces

I'm dosing 20ml, 3 days/week

 

[Jose]

You seem to be dosing 1.2 ppm of iron if my calculations are good. So you shouldnt have iron defficiency.
The calculator says you have to prepare a solution with 38 g to be adding 0.5 ppm of Fe a week. Lets listen to the calc which is probably right. You seem to have enough Fe anyway.
What about nitrates?