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Rotala hra growing green

Sam.petty

New Member
Joined
9 Feb 2023
Messages
3
Location
Wakefield
I recently added rotala hra to my tank it’s growing but all the new growth is green, think it may be my nitrates are too high for it, nitrates at 40ppm (same out the tap) any top tips on how I can get the nitrate down more tank is very lightly stocked but every water change is boosting the nitrate back up, it was never an issue before but I’d like to get it lower to help get better reds
 
@Sam.petty please provide more details


Might help Horning the advice 😀
 
I doubt it is the nitrates as I dose my tank with 30 ppm of nitrate per week and mine is red/orange. Most likely it is low light. I’ve had r. hra in a low light tank with co2 and it never colored up right and grew green.
 
For species such as Rotala rotundifolia and its variants colorata/H'ra/etc, Rotala Goias, Hygrophila pinnatifida & H. araguaia, Ludwigia arcuata & L. brevipes - they only get truly deep red under very low N conditions - using high light alone will not achieve the same effect.
 
Yes to achieve the deepest reds with r hra you need to nitrate limit but even under high nitrate conditions it should be red/orange with sufficient light. From my experience the only time I’ve seen it grow green was under low light when I was growing mostly epiphytes.
 
From my expierence, when light limited plant will be green. Light light ligh and more light and it will turn red. Especially if you really high tank, it is not easy to achieve 🙁
 
I never had a problem turning it red under 20-30ppm nitrate; but it took co2 and very decent light; i normally let it float so it is near the top ala lots of light.
 
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