[Eheim Opal] How to get your plants to PEARL

This topic has been of great interest to me not only because pearling plants look beautiful but also because of the belief (even though it may not be true) that pearling plants indicate a healthy tank. I will try to answer this question as simply as possible. First we have to understand what pearling is:

What is pearling?
Pearling occurs when bubbles of oxygen are formed on the leaves and roots of your aquarium plants as a byproduct of photosynthesis. When your aquarium water is supersaturated with gases, oxygen is NOT easily dissolved thus it forms on the leaves / roots of plants and bubbles to the surface.

My aquarium has high light, balanced ferts and lots of CO2 why is it not pearling?
A healthy aquarium does not necessarily always have pearling plants. Pearling is unrelated to plant growth and plant health. Sometimes the water may be saturated with organic waste products produced by your plants and fish. The most efficient way to remove this is by doing a water change. When you do a water change not only does it remove organic waste matter but it also delivers a lot of dissolved CO2, O2 and other gases. This supersaturates your water and causes pearling.

How do i get my plants to pearl?
1. You must increase the saturation of gases in your water so that any excess gases produced by plants is not dissolved into the water column but is produced as bubbles instead. This not only includes CO2 but oxygen as well. Run a airstone at night and bump up your CO2 during the day to supersaturate your water
2. Do a large water change to remove all organic matter every couple of days (and to saturate your water with dissolved gases)
3. Find the most efficient method to dissolve CO2 into the water. Eg. a CO2 reactor or an atomiser
4. Make sure you have enough light to induce photosynthesis in your plants. Strong light accelerates photosynthesis. (low light plants can also pearl)

I hope that answers the question to pearling plants.

Good luck!