All of my siphons are designed for high flow rates, but you have a different goal.
One siphon I that ran successfully on a freshwater tank for a year, clogged up too easily on a brackish water tank which had heavier biofilm. Within six weeks it was clogging up. I ended up increasing that siphon by two sizes.
One siphon I that ran successfully on a freshwater tank for a year, clogged up too easily on a brackish water tank which had heavier biofilm. Within six weeks it was clogging up. I ended up increasing that siphon by two sizes.