Planted Tank Obsessed
Join Date: May 2015
Location: Central Michigan
The thing with dosing is you need enough plant mass, of the right plants, to uptake the nutrients you're adding. You have mostly lower light, non-demanding plants. Not that they won't benefit from co2 or occasional dosing, but they are still slow growers for the most part. You may have medium intensity light, but as far as your plants are concerned, you have low light, slow growing plants. Dose according to your plant selection and plant mass. Light intensity is kind of an afterthought but still important.
Remove damaged and rotting leaves from your anubias. They are only taking unnecessary energy to die and if you trim the leaf off at the rizome, it can focus that energy on creating a new leaf instead.
The plants you have don't really need the co2. However, any added co2 is beneficial so I wouldn't stop using it. I'd also cut the photoperiod to 8 hours. With the added co2 and nutrients, your plants only have to worry about the light. Less light and they will use the co2 and nutrients as energy to stretch towards the light. The higher the light intensity, the more compact the growth will be (this applies more towards fast growers).
I'd trim off the damaged leaves and add a bunch of stem plants to eat up the nutrients you're adding.
Don't skip water changes when adding nutrients! Without doing water changes, all of the unused nutrients remain in the tank and the concentration only gets higher with the more dosing going on. Plants love water changes. As many as you have time for.