The Planted Tank Information
General Planted Tank Forums
General Planted Tank Discussion
Local Pet Stores, Clubs, and Conventions
Low Tech Forum
Planted Nano Tanks
Specific Aspects of a Planted Tank
Fertilizers and Water Parameters
Shrimp & Other Invertebrates
The Lounge & Introductions
Home Page News
ACUREL Aquarium and Pond Care
Aquatic Foods & Blackworm Co.
Aqua Forest Aquarium
Aquatek of California
Current-USA and Ecoxotic
Green Leaf Aquariums
The Planted Tank Forum
>> Anubias and Lagenandra
>> Ferns and Mosses
>> Floating Plants
>> Rosette Plants
>> Stem Plants
>> Terrarium Plants
>> Water Lilies
Plant Profiles Stats
Blyxa japonica (
22 - 28 C
5.0 - 7.0
Position in Aquascape:
Planted Tank Enthusiast
This plant can also be grown in high light.
This plant loves CO2. I grown it w/ and w/o CO2 injecting. I did well without but took off when the CO2 was added to the mix.
Blyxa japonica is a stem plant actually, but the stems are so short to be covered by the head of leaves. Its propogated by removing the side stems and planting them, which roots and forms another plant.
It grows very well in my tank, showing moderate growth rate under high light (4wpg) with 15ppm CO2 (pH=7.0 via pH controller) and regular fertilizer additions. Iron will help it keep its green under high light, otherwise it can take a golden/brownish tint to the leaves. It is very easy to propagate. Simply uproot one that has grown dense and you will find it actually will have one or more stem offshoots. Simply pull apart the offshoots and replant. After letting one stem grow undisturbed for 1 month in my tank I pulled it apart to have four separate plants, all of them with root growth. My only complaint is that it cannot be kept short, it grows too tall to be used as a foreground plant.
Can turn blood red under very high light.
I have been unable to get this plant established because my [I]Puntius denisonii[/I] (torpedo barbs, roseline sharks) would not leave it alone. Blyxa japonica takes a little time to become truly established in the tank; however, my torpedo barbs kept pulling it up, making it impossible for it to become established. It seems the torpedo barbs like to nibble on the tips of the plants, perhaps as the tips soften after being transported and freshly planted. As the torpedo barbs nibbled, they'd inadvertently pull the plant out of the substrate. I'd then find it floating in the water soon after. This process would continue until the plants just withered away. I've tried this plant 3 times with the same results. I think if the plants were anchored down so the torpedo barbs could not pull them up, then they would eventually become established and put out enough roots to prevent the torpedo barbs from being able to pull them up later.
My redlines also pulled it up and nibbled. I just kept replanting and it finally rooted well and took off - is growing very nicely now and the redlines seem to hardly go near it any more.
Planted Tank VIP
Today I was looking through my container pond and found this plant happily growing at 58*F This makes it a good candidate for a cool water tank as well as warm.
Planted Tank Enthusiast
Greener under lower light, redder under high light. Loves CO2.
Planted Tank Enthusiast
We had a severe heat wave here in cali, temp got over 105F. This plant ended up dieing, tank got over 88 degrees. NOT herbivore proof, even discus, rams, and sae cant resist the occassional nip. Its a delicacy, i think its eaten by some people in its native range.
Planted Tank Obsessed
Actually a stem plant, looks very natural in a big bunch. Not the easiest plant to grow, high light, and good substrate, possibly even co2 required for long term health.
I have this in my 75 usg tank and it is incredibly prolific. I've grown it both w/ and wo/CO2 and it does well either way but does grow faster with CO2. I have super high LED lighting in my tank and I have never seen it turn red. Oh well, still great and I have to literally give it away it propagates so well.
I've got this on both sides of my tank. The side where the CO2 comes out is about 3X larger than on the other side. This is the only plant I've seen with such a huge differential.
Just started my first high tech tank 30g lit by 4 cfl with 8.5 inches reflectors ... I don't know if this is hight light but it's pretty bright. within a week new leaves are red and green. will add pictures ASAP
I keep it at a pH of 6.0, TDS range from 120 to 150 ppm, high LED light, CO2 and daily fertilization, including iron. New plants are created about every two weeks. My plants are less than five inches tall.
-- PlantedTank.net (Full - Original)
---- PlantedTank.net (Full - Light)
-- PlantedTank.net (Classic)
-- PlantedTank.net (Mobile)
Acceptable Use Policy
The Planted Tank
For the best viewing experience please update your browser to