Various sizes of Stainless Steel Filter Guards for sale. These are great for planted tanks and shrimp tanks. Protect baby shrimp or fry from getting into your HOB and canister filters. There were purchased from Han Aquatics. I recently switched over to an air system, so no longer have use for these.
3 x 17mm for Aquaclear 20, 30, 50/Fluv 305, 406/Marineland 160/100 - $7
1X 19mm for Sun Sun canister - $7
4 X Rectangle for Marineland Penguin 100/200 - $8
2 x 26mm rectangle for Marineland Penguin 350 -$8
Shipping for $5. PM me to purchase.