Hint for the marine part:
Where might there be easy to observe marine life, high plant/macro algae density, fish, inverts etc is a temporarily closed system 2X a day?Haha, Easy enough.:hitting:
pH goes from about 8 to 10 or a tad over that sometimes. Well, at/on most intensive areas but not all. Must check it out during night fishing.
Hopefully I dont have to jump into water at night,even shallow. :nono: :grinyes:
Shallow FW ponds with thick weed growth, low alkalinity will easily move 2 or more units of pH. That much I knew but so many variables influencing outcome as in nature. No two lakes are alike, etc.[/QUOTE]
Aeration in a planted tank at night.
- Thread starter Hank
- Start date
look at it this way... if in nature somehow water areas usually end up getting more/replenished oxygen during the night then plants have probably adapted to make the most of that situation and would likewise benifit from similar setting within the tank.... what yall think about that thought?
Amano-style tanks run nighttime aeration mainly because the system’s oxygen balance shifts hard once the lights go off.
→ In the day, plants are net oxygen producers, but at night everything flips—plants, fish, and especially bacteria all consume oxygen while CO₂ builds up. So even a “healthy” planted tank can see a noticeable O₂ drop in the early morning hours.
→ Aeration isn’t just about pushing out CO₂. It also keeps surface agitation going, improves gas exchange, and helps prevent low-oxygen zones from forming in tightly scaped or heavily planted tanks. In some setups, it also keeps the bacterial bio-load from stressing the system when oxygen demand peaks overnight.
→ Practically speaking, Amano’s approach was about stability. He was running very high-light, CO₂-injected systems where even small overnight swings could cause stress or algae issues. Night aeration smooths that out and keeps things consistent until lights come back on.
You see a similar principle in larger water systems too—pond setups like those managed by MidWest Ponds often rely on continuous or timed aeration for the same reason: preventing nighttime oxygen crashes and keeping the whole system stable rather than reactive.
Bottom line: it’s less about one single function (like CO₂ removal) and more about maintaining steady oxygen levels and gas exchange during the tank’s most “unstable” period.
→ In the day, plants are net oxygen producers, but at night everything flips—plants, fish, and especially bacteria all consume oxygen while CO₂ builds up. So even a “healthy” planted tank can see a noticeable O₂ drop in the early morning hours.
→ Aeration isn’t just about pushing out CO₂. It also keeps surface agitation going, improves gas exchange, and helps prevent low-oxygen zones from forming in tightly scaped or heavily planted tanks. In some setups, it also keeps the bacterial bio-load from stressing the system when oxygen demand peaks overnight.
→ Practically speaking, Amano’s approach was about stability. He was running very high-light, CO₂-injected systems where even small overnight swings could cause stress or algae issues. Night aeration smooths that out and keeps things consistent until lights come back on.
You see a similar principle in larger water systems too—pond setups like those managed by MidWest Ponds often rely on continuous or timed aeration for the same reason: preventing nighttime oxygen crashes and keeping the whole system stable rather than reactive.
Bottom line: it’s less about one single function (like CO₂ removal) and more about maintaining steady oxygen levels and gas exchange during the tank’s most “unstable” period.
