I need someone to look at my symptoms/situation and tell this numpty what he's doing wrong and how to stop killing plants. I've got two tanks, and one of them I think I understand what the issue is.
The first, is a 90L tank, well established but sans-plants for a while. I reintroduced plants with a piece of bogwood from the local Maidenhead Aquatics the other week. This had a java fern and I think java moss on it. This seems to be resisting me and only dying slowly. A couple of days ago, I set up a dedicated planted nano tank (more on that later) and put a left over bunch of Elodea Densa into this main tank. Planted in gravel, it's turning yellow from the bottom upwards. I think I understand this one and there's a lack of nutrients in the soil. Possibly not enough CO2.
The light on this tank is an Interpet LED effort, "LED Bright White Double Lighting System - 36cm". 18 LEDs at 0.2w each. This was to replace the fluorescent lighting that came with the tank and failed recently. It's on for 10 hours per day.
What really baffles me though is how I'm managing to kill plants in my special planted tank
It's a Fluval Spec 19L, so desktop sized.
The substrate is JBL ProScape PlantSoil (brown if anyone cares). Purchased from Maidenhead again but linked here as it's not on their website. https://charterhouse-aquatics.com/shop/aquatics/decoration/jbl-proscape-1/jbl-proscape-plantsoil-brown-3l. Same stuff, just cheaper.
Plants as follows (left in rockwool to stop them floating away for now):
- Alternanthera reineckii (var. lilacina)
- Micranthemum umbrosum
This tank is unheated.
Being in the 'soil', I would expect nutrients to be a problem. I'm not convinced the light is the brightest on this tank, but it's also on for around 10 hours a day (manual as opposed to automatic for the other tank).
CO2 in both tanks is from liquid - Colombo Liquid CO2 Fertiliser.
Feed is from JBL Ferropol. Weekly after water change.
I think I need to find a way of getting some decent nutrients into the main tank, but am truly baffled with the failure of the nano tank. Clearly something is missing, but I'm no clue where to start on that one!