Ive heard good things from adding oak leaves into your pleco tank for a bit of food and they produce the tannins in the water, has anyone used this method and did it produce any different behaviour in the fish? Also can you use any leaves?
I just leave them in until they disintegrate, I syphon out the bits (you don't get many bits with shrimps in the tank) and remove the leaf skeletons. In soft water the Loquat, Oak and Camellia leaves last several months and the other leaves a shorter time. I tried Birch (Betula) but they disappeared really quickly. The alder cones also last several months. If you haven't got somewhere you can pick them from TA Aquaculture sell them.question is how long do you leave the leaves in there for? days/weeks?