水草情迷

每次加入新水后水草的吐氧量大大增加？有那位能

This might be explained by the temperature difference.

Since solubility of air decrease in temperature and usually the temp of tap water now is lower than room temp. So, when u refill your aquarium, the undissolved air will release out fm water.

I hope this might help.

In case u like to know more, pls consult Handbook of Chemistry & physics pg. B-332, 1st edition

"Tap water can be rich in CO2 and has many important trace elements, which is good for your plants."
quoted from http://www.trueaquariumplants.com/articles/pf1.asp

about the water temperature in relative to room temperature~
Ive always thought the opposite~ (water temp higher)
may be wrong on both of these~~
someone please confirm~~

I am new in fish & plant, but I am good at science

I know:
when water temperature is high, less air dissolved in water
when water temperature is low, more air dissolved

I think:
the photosynthesis is depend on
1. the ratio of oxygen against CO2 (more CO2, more
photosynthesis)
2. the light quality & temperature (depend on which plants)
3. etc

I think:
if there is CO2 supply in your tank, the CO2 density will decrease after you add tap water --> less photosynthesis

[quote="海蓝微风"]每次加入新水后水草的吐氧量大大增加？有那位能

我看是水中No2, No3 被中和了, 有利水草進行光合作用.