How long should I keep my lights on?

[Qumulus]

Hey! So I'm new to Aquascaping and I've just started my first tank. I've done a lot of research but I'm still unsure how to set up the lights in my tank. I'm currently running a Juwel HeliaLux Led-ramp 28 watts together with two T5's but I'm unsure if this is too much lightning and that it would cause an algae outbreak? (33,5 lumens/liter)

I run the Ledbar 8 hours a day on full luminosity and the T5's 4 hours a day. So 4 hours of 3500 lumen and 4 hours of 6700 lumen.
To make the matter more complicated I also have a Juwel Day/Night control timer which I use to dim my Led-Bar. So the total running time for my Ledbar is more like 12 hours a day but it gradually dims the light from 0 luminosity to maximum under 2 hours each morning and evening creating a Dawn/Dusk effect.

How should I set up the lightning to thrive plant growth while also keep algae under control (hours)? Keep in mind I'd also like to have that Dawn/Dusk effect with the timer so I can see the tank "wake up" and " go to sleep" each day.

Specs:
Juwel Lido 200
Juwel internalfilter
Lights:
Juwel HeliaLux Led 28 watts 3500 lumens
2x Juwel T5 (approx 1600 lumens each)
Plants:
Monte Carlo
Staurogyne repens
Riccia fluitans
Alternanthera reineckii Rosaner vig
Anubias
Java fern
Substrate:
Ecs Clay-substrate
JBL root fertilizer
Tropica Aqua Soil

Thank you all in advance, would greatly appreciate anyone's help.
/Q
I hope I made everything clear, otherwise just ask

 

[Qumulus]

Is there anyone that could help me out on this subject?

Skickat från min SM-G960F via Tapatalk

 

[Pauscape]

i would recommend stick with the rule of
8-10 hours
but for new tank usually 10-12 to promote the plant growth and for transition (if the plant are emerse leafs)

 

[Tim Harrison]

The general rule is 6 to 8 hours. 6 to begin with. There's little point in a photoperiod longer than 9 hours, it just encourages algae.

During the transition period when plants are establishing there is usually a lot of organic matter released in to the water column from plant melt, and if AS is used ammonia etc. A long lighting period will just encourage algae at this point.
Once the plants have become established and the plant biomass has grown, the tank will become more biologically stable and light intensity and/or duration can be gradually increased over period of several weeks.

Intensity is usually far more important than duration. Most of my scapes only get a photoperiod of 6 hours a day. And the intensity doesn't have to be very high either. I can still grow compact carpets with relatively moderate lighting intensity.
What's of overriding importance is CO2 flow and distribution. Good CO2 will lower a plants light compensation point. But get your CO2 wrong and you will run into all sorts of problems, especially if your lighting is too strong or on for too long. That is plant deficiencies and algae.