I have a 20g tall with substrate planted Wisteria and a floating mass of Anachris and Red Leafed Ludwiga . It all has been growing fast enough that Iv'e been cutting half of it out once every 3-4 weeks. Then I started keeping the water level about 1.5-2'' below the top. ( I had been keeping it .5'' below the top.) I did my usual cutting and although the Anachris and Ludwiga bounced back as usual, the Wisteria has really struggled. Could the lower water level reduce light?
yeah, if plants are farther from the light, that could definitely have an effect on the growth. That's why stronger lights/higher wattage (correct me if i'm wrong someone!) are recommended for taller tanks, to reach down to the substrate plants.
The Wisteria is no farther from the light but the water is farther from the light. The Wisteria usually grows to the top and spreads, it's just having trouble getting to the top this time, even though it's closer to the top of the water.
It all depends on the plants Bekah. In this case I betting the lower water lvl is making it harder for the light to penetrate the water. Less of the light is making it to the bottom or to where the wisteria. The lower water is acting like a reflector lol its late and I have no clue as to what I am saying. But why not just raise the water back up and see if it makes a difference again.
I raised the water level back to its previous height and 12 hours later the Wisteria is showing improvement . It seems that as you lower the water level , less light is available to the plants.
Glad to hear that! I'm willing to bet it was bored's reflection theory. Posted via Mobile Device
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