- Joined
- Jul 9, 2009
- Messages
- 469
- Reaction score
- 259
Even though the Plank is pretty much silent to us, the fish can sense the vibration of the motor when it activates, they get trained to this dinner bell pretty quickly. This may be an advantage or disadvantage depending on the animals you have and how you like to observe them. As far as effectiveness, I really don't think there is a difference if you have sufficient flow in the return section of the sump. Based on the number of request we have for longer feeding tubes, I think probably 20% put in sump area and I have only heard positive feedback. I would have 0% concern about the food clogging the pump unless you include pellets in your food mix.