Plants leaf issues

[Oposum4e]

Hey guys, I am having some difficulty figuring out why these plants are not doing so well. I have fluval aquasky, diy co2, I dose liquid fert and the plants have root tabs but they still are kind of dying. Any tips appreciated I am thinking about nitrogen/phosphate deficiency as the tank has only a few fish and I do 30% water changes weekly. Kh is 6-7 gh - 4-5 ph around 7

 

[Byron]

What is the liquid fertilizer?

Data on the light.

 

[Oposum4e]

What is the liquid fertilizer?

Data on the light.

The tank is 15 gallons, I use pro fito from easy life - 3ml per week. Light is fluval aquasky, the tank is about 16 inches deep.

 

[StevenF]

In your first picture the older leaves are dying or missing while new leaves are healthy. This is typically a symptom of a mobil nutrient deficiency. Mobil nutrients can be removed from old growth and moved to support new growth. The old leaves then die and fall off. Mobil nutrients are nitrogen, potassium, magnesiumm, chloride, and molybdenum.

Chloride and molybdenum are trace nutrients are only small amount is needed. While it is possible for deficiency in these nutrients it is unlikely. that these two are your problem. check your water test results. if the water tests show no ammonia, nitrite, or nitrate it is possible that you have a nitrogen deficiency. Generally with a GH of 5 to 7 you would not expect a magnesium deficiency but if you don't do regular water change and or don't change enough water you plant could run out of it. I typically replace 50% of my tanks water once a week.

Can you provide any information on the fertilizers you are using? Many people assume any fertilizer will will have all nutrients plants need. However the truth is that many fertilizer don't have all the nutrients plants need. If we can find the ingredients we might able to eliminate some nutrients from the suspects list.

 

[Oposum4e]

In your first picture the older leaves are dying or missing while new leaves are healthy. This is typically a symptom of a mobil nutrient deficiency. Mobil nutrients can be removed from old growth and moved to support new growth. The old leaves then die and fall off. Mobil nutrients are nitrogen, potassium, magnesiumm, chloride, and molybdenum.

Chloride and molybdenum are trace nutrients are only small amount is needed. While it is possible for deficiency in these nutrients it is unlikely. that these two are your problem. check your water test results. if the water tests show no ammonia, nitrite, or nitrate it is possible that you have a nitrogen deficiency. Generally with a GH of 5 to 7 you would not expect a magnesium deficiency but if you don't do regular water change and or don't change enough water you plant could run out of it. I typically replace 50% of my tanks water once a week.

Can you provide any information on the fertilizers you are using? Many people assume any fertilizer will will have all nutrients plants need. However the truth is that many fertilizer don't have all the nutrients plants need. If we can find the ingredients we might able to eliminate some nutrients from the suspects list.

This is the ingredients list I found for the liquid fertilizer

The root fertilizer is clay balls enriched with iron and other nutrients but I wasn't able to find exact list. They are from JBl

 

[Colin_T]

Is the light unit only on for 6 hours a day?
If yes, you could increase it a few more hours. You can have light on for up to 16 hours but fish and plants need 8 hours of darkness. Most people start out with 10-12 hours a day and then increase or decrease that time depending on plant/ algal growth.

The plant in the first picture is Bacopa and it does best as a marsh plant with wet roots and dry leaves. If the plant is fairly new, then the terrestrial leaves are probably dying off due to being underwater.

The colour spectrum chart for the light could do with some adjusting. Get more blue light so you have equal parts red, blue green and white for most of the day. But start the light cycle earlier and finsh it later. Start with 25% light and increase it 25% every 30-60 minutes. Then have 6-8 hours at 100%. Then reduce it by 25% every 30-60 minutes until the lights go off at night.