In My Humble Opinion (IMHO) that is just a typo. No need to make a big fuss over it.

Anyway, callisto168, I mostly buys my plants and other stuffs at a nearby LFS. Sometimes I go to 88 Pandan Indah, or East Aqua, Ikano Power Centre. And callisto168, good luck on your tank.

Installed Boyu External CO2 diffuser today for my test 2 ft tank. I noticed a small design difference from ISTA, Boyu uses some ceramic for the middle part that actually diffuse CO2. ISTA uses stainless steel. Overall I think, Boyu is not as good as ISTA, producing big bubbles, just like using the air stones. Not sure if mine is faulty or what. But it is too early to say.

Best Regards

Thanks