Rotala sunset
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Old 04-13-2011, 03:06 AM   #1
Centromochlus
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Rotala sunset


Hi all,
Just thought i should start a thread focusing on Ammania sulawesi, more commonly known as Rotala sunset. I haven't been able to find very much information about this plant (besides that it's "fussy"), so i'd like to share my experiences with it and hopefully some other people can chime in as well, since it can be a challenging plant to keep.

I'm keeping my 6 stems in a 90g tank right now. It has a 4x54 watt Catalina Aquarium T5HO (individual reflectors, about 5" above water surface), ADA Amazonia I substrate, pressurized co2 (always around 6.4 pH), and EI dosing schedule as follows:
- Sunday: Water Change. 3/8 Tsp CSM+B, 1/8 Tsp 13% Fe (EDTA)
- Monday: 3/8 Tsp KNO3, 3/8 Tsp KH2PO4, 1/4 Tsp K2SO4
- Tuesday: 3/8 Tsp CSM+B, 1/8 Tsp 13% Fe (EDTA)
- Wednesday: 3/8 Tsp KNO3, 3/8 Tsp KH2PO4, 1/4 Tsp K2SO4
- Thursday: 3/8 Tsp CSM+B, 1/8 Tsp 13% Fe (EDTA)
- Friday: 3/8 Tsp KNO3, 3/8 Tsp KH2PO4, 1/4 Tsp K2SO4
- Saturday: Rest Day

Believe it or not, i do not test my water, but i'll let you know what the GH/KH is at a later time. I just use plain ole' Phoenix tap water. Water temp is around 78F.

I've found that micronutrients play a huge role in this plant's appearance. When you don't give it enough iron, it's much paler. I recently added iron root tabs, and they are much more red than before. I've noticed that the growth is more compact, but i'm not sure if this is caused by the extra iron or not.

This plant needs plenty of co2 and a decent amount of light to survive. The only real problem that i've experienced with my rotala sunset is sometimes the leaves curl. I have yet to figure out what causes this, but the iron root tabs seem to keep the leaves nice and straight. I've also noticed that it doesn't recover from being trimmed too well (somewhat like a tonina). It's best to trim the top growth above a new side shoot. If there is no side shoot, the bottom rooted portion will struggle to recover when trimmed.

Here's a few pics. Sorry-- they're not the best quality, but hopefully they'll do.

Old stem grown without root tabs:


Grown with root tabs:


What it can supposedly look like (not my pic). I have yet to figure out how you can make it look this good:
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Old 04-13-2011, 03:10 AM   #2
Tinanti
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I'm not certain which species yet, but it is definitely a Rotala. There are only two sessile flowers at each node, not a cyme like in Ammannia.
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Old 04-13-2011, 06:17 AM   #3
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Also consider that the photo you're comparing to was probably taken using 10000K instead of whatever light you're using (6500-6700K it looks like, which will make your plants look much greener). Consider adding a 10000K bulb or two to your setup to show off the reds.
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Old 04-13-2011, 06:52 AM   #4
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Beautiful! I hope the box you sent me comes tomorrow
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Old 04-13-2011, 07:07 AM   #5
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azfishkid, try pushing a stem on it's side, that's how mine grew new stems from the nodes. It got pushed over when I was doing a water change, and didn't notice for a while, now it's branched pretty good.
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Old 07-28-2011, 11:33 PM   #6
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Thread is a little old but any new updates. Maybe a new pic. Or anything you have learned.
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Old 07-28-2011, 11:35 PM   #7
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wow that plant looks amazing. Anyone selling these?
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Old 07-28-2011, 11:38 PM   #8
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Wonderful! Amazing what a few root tabs can do.
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Old 07-29-2011, 12:26 AM   #9
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All of my Rotala sunset died on me a few months ago. Not sure why.
Crispino Ramos is growing this like it's a weed. I guess it seems to like RO water? Hopefully he finds this thread and gives some information.
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Old 07-29-2011, 02:56 AM   #10
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I think I may have mentioned this before, but I've found that they flourish when the pH is under 6.0. Mine did best when the pH was 5.6-5.8 during the photoperiod.

I also kept them under extremely high light (4 wpg T5). gH was around 7-9, so I don't think the water needs to be super soft.
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Old 07-29-2011, 04:36 AM   #11
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AZ I just picked up a few stems from Cris. I'll shoot him a PM, I still have a few days before I get them. So I'll see what info I can dig up in the meantime.

Snausage I'm pretty close to your setup PH 6.2 and WPG at a watt less. GH right on.

I like experiments so I'll plant some with root tabs and some with out in my current conditions and just post some results in this thread.
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Old 07-29-2011, 05:08 AM   #12
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Doesn't need soft water, high light is a must though, mine started to scream when my floaters overgrew the surface, (4wpg t5ho). They grow super slow, but like I said earlier, to grow more, simply push it onto its side and it'll send up new plants from each internode. Pretty extensive root system on these, and if they get too long, the lower growth gets kinda ratty, even under high light. Very pretty plant though, worth the trouble
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Old 07-29-2011, 05:23 AM   #13
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echo, I grow mine in tap water
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Old 07-29-2011, 05:58 AM   #14
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Lots of good info. Thanks guys. One more question have any of you guys notice what makes it a deeper red?
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Old 07-29-2011, 05:51 PM   #15
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Quote:
Originally Posted by mordalphus View Post
Doesn't need soft water, high light is a must though, mine started to scream when my floaters overgrew the surface, (4wpg t5ho). They grow super slow, but like I said earlier, to grow more, simply push it onto its side and it'll send up new plants from each internode. Pretty extensive root system on these, and if they get too long, the lower growth gets kinda ratty, even under high light. Very pretty plant though, worth the trouble
Side question (as usual ) would pushing any rotala over this way also create new plants at the internodes?
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