I'm with Roy, fingers are best. Being a woman with fingernails helps for trimming too, except for java fern & anubias rhizomes. I have some cheapy stainless scissors I use on occasion for a "mow"...a friend gave me a pair or nice curved ones I haven't even opened yet (oops, don't tell). I think I used some tweezers or forceps once when planting dwarf hairgrass but they needed a lot of finger help...maybe it's a matter of practice with various substrates & tools...& maybe more patience & less "fish stuff" to dig through to find everything instead of my "attack method" when I'm in the short term scaping mood.