Hi everyone,
On the plus side my first tank is proving to be great fun: lots of my plants are doing very well.
That said, I'd appreciated advice re what action (if any) I should take to the following turn of events:
- Over lockdown, I grew some S. Repens and H Quadricostatus emmersed,
and added some of each to the tank about six weeks ago.
- I also bought the Java fern shown in the centre of the tank around the same time. It had been growing submerged at my branch of Maidenhad Aquatics.
Matters of concern:
- The Java Fern is slowly developing brown lines/patches:
The outer leaves of the H Quadricostatus are melting:
And most concerningly, the S Repens is slowly - I think - turning yellowish brown. And my hungry amano shrimp are eating what I assume are dying bits of the leaves:
- The tank is 90cm x 45 x 45 (180litres)
- I'm running a sump
- No CO2
- Flow is high (return pump has theoretical output of 3000l/hr and it only has to lift the water three feet)
- Fluval 3.0 Plant light set to 8hrs per day on 50%
- Dosing 3x recommended dose of TNC complete, daily (10ml)
- API test kits say pH is 8.2, nitrates 80+ppm, ammonia & nitrites zero.
- London tap water: 15dH
- Doing a 50% water change every five days or so, and cleaning the sump sponges every other change.
My Amazon Frogbit isn't showing much yellowing and @dw1305 thinks it looks fine...but am I right that this looks like a ferts issue, despite my enthusiastic dosing of TNC complete? I'm gearing up to try EI, particularly since I'm a chemistry teacher with access to the stock room (ahem, shh), but it's going to take me a while to work out what I'm doing - by which time it may be too late?
Any advice would be much appreciated!
Thanks
On the plus side my first tank is proving to be great fun: lots of my plants are doing very well.
That said, I'd appreciated advice re what action (if any) I should take to the following turn of events:
- Over lockdown, I grew some S. Repens and H Quadricostatus emmersed,
and added some of each to the tank about six weeks ago.
- I also bought the Java fern shown in the centre of the tank around the same time. It had been growing submerged at my branch of Maidenhad Aquatics.
Matters of concern:
- The Java Fern is slowly developing brown lines/patches:
The outer leaves of the H Quadricostatus are melting:
And most concerningly, the S Repens is slowly - I think - turning yellowish brown. And my hungry amano shrimp are eating what I assume are dying bits of the leaves:
- The tank is 90cm x 45 x 45 (180litres)
- I'm running a sump
- No CO2
- Flow is high (return pump has theoretical output of 3000l/hr and it only has to lift the water three feet)
- Fluval 3.0 Plant light set to 8hrs per day on 50%
- Dosing 3x recommended dose of TNC complete, daily (10ml)
- API test kits say pH is 8.2, nitrates 80+ppm, ammonia & nitrites zero.
- London tap water: 15dH
- Doing a 50% water change every five days or so, and cleaning the sump sponges every other change.
My Amazon Frogbit isn't showing much yellowing and @dw1305 thinks it looks fine...but am I right that this looks like a ferts issue, despite my enthusiastic dosing of TNC complete? I'm gearing up to try EI, particularly since I'm a chemistry teacher with access to the stock room (ahem, shh), but it's going to take me a while to work out what I'm doing - by which time it may be too late?
Any advice would be much appreciated!
Thanks
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