Does anyone have any idea where I could find a narrow (low) range pH test kit. I have a Tetra pH one and a paper with 5.5, 6.0 and 6.5 is just not tight enough. I know LaMotte makes (or did) make one, I've read comments about it by George Booth on this list. I've looked at LFS's, Pet Warehouse and Big Al's among others. If anyone has any ideas, please let me know. Thanks, Daphne