Quick question
- Thread starter mah0031
- Start date
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Quick answer , as long as the display lights are off.
If the nutrients drop too much , then reduce the time.
If the nutrients drop too much , then reduce the time.
What is the advantage of having the sump light ON while the DT is off? I see a lot of reefers do that.
It sablizes the ph. Corals in photo synthesis take in co2 whole the lights are on (increasing ph) , when the fuge Light is on the macros then take over the job of reducing the co2.
Co2 btw is produced by all the organisims including the bacteria.
Caseyoidae
Valuable Member
Keeping ph stable
Oh wow, I have my DT light on from 1pm to 11pm then when I get home around 6pm I turn on the sump light. So I should turn on the sump at 11pm to 5:30am when I wake up?
Agreed , yes. But not really a super big deal.
Great. I will follow that from today. Thanks a lot.
All photosynthetic organisms run into what’s called photo saturation. So they stop.
Many love 24/7. For me , experimenting , the opposite was just better. Better growth in fuge etc.
oh ok, I'm learning something new everyday on this side of the hobby. Thanks
Your welcome !
Learning is soo much of the addiction in the hobby I think.
jgvergo
Valuable Member
As Salty pointed out, both corals and macro algae are photosynthetic. Photosynthesis consumes CO2 and produces O2. When CO2 is in solution, it forms carbonic acid, thereby lowering the PH. So photosynthesis lowers PH. If the DT and sump are on at the same times of the day, then they will combine to pull out a lot of CO2 when they are on and the PH will rise more than if they were on separately. Also, CO2 will build up when both lights are off, causing the formation of more carbonic acid and lowering PH at those times. If the the DT and sump lights are on at opposite times, then the rate and amount of CO2 reduction due to photosynthesis is more even throughout the daily cycle. That's why it helps to stabilize PH.
What schedule are you on?
How old is the tank?
