ADA Hemianthus callitrichoides 'Cuba' Browning - The Planted Tank Forum
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post #1 of 8 (permalink) Old 04-21-2019, 12:04 PM Thread Starter
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ADA Hemianthus callitrichoides 'Cuba' Browning

Hello everyone,

This is my first time posting on here. I am fairly new to planted aquariums and I have a question about the state of my Hemianthus callitrichoides 'Cuba' from ADA.

Here is my setup.

Started with his setup at the end of last year.

Tank size : 90 Liter / 23 gallon
Filter : Eheim Classic 2217 good low and water agitation.
Light : Gex clear Led power III 900 - 23.5 W Not sure what specs to pull up.
Heater: 24*C
Substrate: ADA Power Sand Advance / ADA Amazonian standard grain / ADA Amazonian fine grain on top
Additives : 2 x ADA bacteria balls under soil.
Liquid fertilizers - ADA Green Brightly Fertilizer Series. Currently using - Nitrogen / Iron / Neutral K / ECA Plus
CO2 Injection is used (drop checker is a dark green hue) and HC Cuba is 'pearly' everyday.

ADA Plants

BIO Hemianthus callitrichoides 'Cuba'
BIO Cryptocoryne axelrodi
BIO Cryptocoryne parva
BIO Rotala sp. 'Vietnam'
BIO Ludwigia repens 'Super red'

All of the above plants are doing well, except the Cuba.

That said, the HC Cuba is growing a thick carpet, however there is some browning of leaves throughout the carpet.

I'm following the ADA instructions when it comes to fertilizing. But I think I'm missing something as there must be a nutrient deficiency.

Weekly water changes are performed. Usually 60/70% water change.

I do have 4 x Honey Dwarf Gourami
4 x Nerite snails

If you can help me out that would be much appreciated.

Best regards,

Edward

I'm based in Japan, so information is a little limited due to the language.
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post #2 of 8 (permalink) Old 04-21-2019, 04:56 PM
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Originally Posted by EDAqua View Post
Hello everyone,

This is my first time posting on here. I am fairly new to planted aquariums and I have a question about the state of my Hemianthus callitrichoides 'Cuba' from ADA.

Here is my setup.

Started with his setup at the end of last year.

Tank size : 90 Liter / 23 gallon
Filter : Eheim Classic 2217 good low and water agitation.
Light : Gex clear Led power III 900 - 23.5 W Not sure what specs to pull up.
Heater: 24*C
Substrate: ADA Power Sand Advance / ADA Amazonian standard grain / ADA Amazonian fine grain on top
Additives : 2 x ADA bacteria balls under soil.
Liquid fertilizers - ADA Green Brightly Fertilizer Series. Currently using - Nitrogen / Iron / Neutral K / ECA Plus
CO2 Injection is used (drop checker is a dark green hue) and HC Cuba is 'pearly' everyday.

ADA Plants

BIO Hemianthus callitrichoides 'Cuba'
BIO Cryptocoryne axelrodi
BIO Cryptocoryne parva
BIO Rotala sp. 'Vietnam'
BIO Ludwigia repens 'Super red'

All of the above plants are doing well, except the Cuba.

That said, the HC Cuba is growing a thick carpet, however there is some browning of leaves throughout the carpet.

I'm following the ADA instructions when it comes to fertilizing. But I think I'm missing something as there must be a nutrient deficiency.

Weekly water changes are performed. Usually 60/70% water change.

I do have 4 x Honey Dwarf Gourami
4 x Nerite snails

If you can help me out that would be much appreciated.

Best regards,

Edward

I'm based in Japan, so information is a little limited due to the language.
I need more pictures of the area and how thick the carpetis. You might just have to trim it to encourage new growth. Thats what helped mine.

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post #3 of 8 (permalink) Old 04-23-2019, 02:02 AM Thread Starter
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MrPurpleJacket


Thank you for your input on the current situation with the HC 'Cuba' carpet.

I have trimmed it once already, but I don't think I went heavy enough with the scissors.

Here are some additional photos of my aquarium setup.

The dry startup photo was taken in January 20th, 2019.

Best regards,

Edward.
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post #4 of 8 (permalink) Old 04-23-2019, 03:10 AM
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Its probably a co2 issue. A drop checker being "dark green hue" doesnt exactly scream good co2. Lime green would be better. Also its placed way up high in the front corner. Put it way down low on the right and see if it looks any different. Thats where it matters after all.

HC needs good co2 more than anything, more than strong light or ample ferts. See if you can get the co2 levels up a bit. And make sure its at a decent level early in the day, not just the last two hours


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post #5 of 8 (permalink) Old 04-23-2019, 04:56 AM
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I'm based in Japan, so information is a little limited due to the language.
Just in case you run across some information that you think might be pertinent, you can send me a private message, and I can help you translate

Anthony


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post #6 of 8 (permalink) Old 04-23-2019, 09:18 PM
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I agree with Burr740 on low co2. You want a nice lime green color. Also that drop checker is not good at all, and makes it impossible to read accurate levels. I had it before and it would take hours to read. I put it side by side with a traditional shaped horn bell drop checker and it didn't change colors until 4 hours in the photoperiod whereas the traditional one read lime green in an hour. I think it has to do with the low surface area where gas can diffuse into. It helps to put very little solution (1/4 full) into that orb checker for more air to diffuse, but even that took a very long time to read compared to traditional shape.
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post #7 of 8 (permalink) Old 04-29-2019, 12:38 PM Thread Starter
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Thank you for all your suggestions.

I have gone ahead and increased the CO2 levels.
Switched out the drop checker for a horn bell shaped one and relocated on the right side of the tank.
I also trimmed back the HC Cuba to encourage new growth. I will report back to everyone after a couple weeks with an update.

Thanks again for all your help.
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post #8 of 8 (permalink) Old 05-04-2019, 09:32 AM Thread Starter
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Since the last post. I’ve noticed a substantial increase in pearling coming from the Cuba. This I think is due to the increase in C02, but I would have to say lighting as well. After 2 or three days of C02 injection (lime green drop checker) color there was little or no pearling. I suspected it might be the lighting. However, I’ve read on many forums and websites that lighting isn’t necessary for growing Cuba. Though I was curious to test this out and decided to add a smaller sized light to cover only the carpet area and see if that would help. The first day using the extra light I noticed a substantial amount of pearling and bubbles coming from the substrate. Which to me shows that my lighting is slightly off and requires a higher PAR.

At the moment I’m using a GEX LED Pro III 2017 and it’s Ra is 78 and Wattage is 24.5 for a 36” size light.

What are some LED light recommendations?

Shall I just buy the same one and double them up?
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