Hmm, I'm no expert with aquatic plants but a few things spring to mind:
It sounds like the plants need to get a hold over the algae but just aren't able to do so as it's already got quite a hold so;
Have you tried Crossocheilus siamensis? I found them to be an excellent algae eater in my planted tank, to the extent that I couldn't get any to grow anywhere. One in my 55 was enough to keep the whole thing spotless.
If the siamensis is able to knock the algae back you might be able to increase the ferts to a dose where the plants are able to really rocket ahead so that THEY become the dominant organic matter... Fully utilizing the amount of light you're giving them. You need to get the plants a foothold over the algae.
What exactly is your light cycle? I found that providing a couple of breaks during the day also helped to ensure that algae couldn't get a stronghold. As long as you give the plants 4-5 hours of continuous light they are able to photosynthesise efficiently, so work the 1/2 hour - 1 hour breaks around this requirement.
How do you control your co2 saturation?
How do you dose and measure your dosing?
What are your NitrAtes?
I used EI with 50% weekly water changes and had great success, the key may well be in simply upping your water changes (phosphorous builds up and algae uses that stuff to grow like nuts!).
:thumb:
It sounds like the plants need to get a hold over the algae but just aren't able to do so as it's already got quite a hold so;
Have you tried Crossocheilus siamensis? I found them to be an excellent algae eater in my planted tank, to the extent that I couldn't get any to grow anywhere. One in my 55 was enough to keep the whole thing spotless.
If the siamensis is able to knock the algae back you might be able to increase the ferts to a dose where the plants are able to really rocket ahead so that THEY become the dominant organic matter... Fully utilizing the amount of light you're giving them. You need to get the plants a foothold over the algae.
What exactly is your light cycle? I found that providing a couple of breaks during the day also helped to ensure that algae couldn't get a stronghold. As long as you give the plants 4-5 hours of continuous light they are able to photosynthesise efficiently, so work the 1/2 hour - 1 hour breaks around this requirement.
How do you control your co2 saturation?
How do you dose and measure your dosing?
What are your NitrAtes?
I used EI with 50% weekly water changes and had great success, the key may well be in simply upping your water changes (phosphorous builds up and algae uses that stuff to grow like nuts!).
:thumb: