I had two weeks holidays, and I asked my working colleagues to look after my Hi-tech aquarium while I'm gone. I asked them not to change anything (no extra planting, moving stones around, simply "do not change anything !!!)Today, back from holidays, the first thing I did, I went to check on my Hi-tech, expecting to see algae blooms, but instead I screamed through the shop "What the heck are these doing in my tank!!!!!".
Of course I am going to remove those cows ;-)
