My test kit cylinders are getting kind of filmy. Especially the Hanna checker. I would think if I got a test tube cleaning kit, it should do the job. Any idea where to get one or which one to get? I basically just want a brush, solution, and glass wipes.
Would you think a science kit would be cheaper than something labeled Red Sea or Hanna?
Would you think a science kit would be cheaper than something labeled Red Sea or Hanna?