Originally Posted by stephanieleah
I have kids napping in my aquarium room for 2-3 hours mid-day every day. Which means my tank gets 5ish hours of light in the morning, a 2-3 hour break, and then 5ish hours of light in the evening.
Does this break time in the middle interrupt the photosynthesis process? It was brought up on Angel079's algae crisis thread that algae takes about 4 hours to start photosynthesizing once it is getting light. Is this also true with plants? Is it better to have a good solid 8-10 hours of light rather than breaking it up like this?
Peter Hiscock [Encyclopedia of Aquarium Plants] states that a mid-day "siesta" of no aquarium lights for about 2 hours, with lights on for 5-6 hours before and after, will not harm plant photosynthesis but will deter algae. I have never myself done this, but others have and reported success with no perceived detrimental effect to the plants.
LIGHTS ON ALL NIGHT: |
I took out my light timer (don't remember why) and one night I forgot to turn the lights off. The next morning, my stem plant had grown visibly taller and had lots of new growth at the base. The other plants were noticeably more dense as well (a bulb and a grassy one).
The question is: how does this impact the "whole" tank? CO2 and O2 levels? Fish health? Would it hurt to leave it on all night once a week to promote new growth?
Definitely do not
do this. First, it will absolutely stress out the fish. Aquarists have had outbreaks of ich when lights were left on 24 hours, and ich only occurs when fish are stressed by something. Fish are biologically programmed to day and night, night being total darkness for 10 hours. Plants are also so adapted by nature, and while it may take more than a night or two to see the detrimental effect on plants, nutrients are not likely to be sufficient to balance, and this will result in algae out of control. Nature has set all this up, we should not interfere.
PRUNING: How do you prune your aquarium plants? I have a bulb (Aponogeton Ulvaceous), a stem plant (some sort of Hygrophylia I think), and one or maybe two varieties of Vallisneria, and one Java fern which as yet needs no pruning. (Here's my tank: New Freshwater Tank - 29 gallon Freshwater fish tank) |
Do you take plants out to prune? Use scissors in the tank? Pinch off leaves with fingers?
And when you take them out to prune, how do you replant them? I find that pushing the roots into the gravel sustrate as they try to float up while I bury them feels forceful and harmful on the root system.
If you are pruning to remove yellowing leaves [=dying leaves] which occur on all plants from time to time, just pull the leaf off at the base (at the crown) on rooted plants. If you want to remove "excess" leaves that are still healthy, cut them at the base (I just pull the leaf out and down in a sense, and it breaks off).
On stem plants, pull them up to trim them, then replant the top parts. Stem plants have no root systems comparable to rooted plants to worry about, although some (like Wisteria) do develop quite extensive systems in the substrate.
On rooted plants attached to objects I would just pull the leaf off at the base.