I always through pennies into my tank, sounds odd but the copper will kill any invertabrae. Not a good idea if you have snails or crabs/lobster. Just clean the penny like you would any tank decoration and throw them in. I had some smaller wormlike creatures in my tank before I did this, and I haven't seen them since. It is a small price to pay to get rid of them.
__________________
2.5g(cycling)
10g(7 convict fry, 6 blue platy fry, bn pleco, 2 mystery snails) java moss
29 gallon( Kissing Gourami, BN Pleco, 3 otos)
Anubias Nana, Java Moss, Amazon Sword, Corkscrew Vals
55 gallon(Albino Chocolate Pleco, Oscar(Vinny), Jack Dempsey, Blood Parrot Hybrid)
Anubias Nana, Java Moss, Wendti Crypt, sag. subulata, corkscrew vals, hornwort and unknown sword
90g (5 Otos and 2 Rubberlip Plecos) Madagascar lace, glossostigma, sag. subulata, Amazon sword, pennywort, giant hairgrass |