Does anyone know where to get replacement test tubes for API test kits or Marine Depot carry these in the near future? My cats decided to jump on the counter while the tubes were drying and they don't play well with tile floors... doh!!
The only place I've found them is here at pet mountain and I'd prefer to order them from my preferred
It is best to use a syringe, as the API and most test kits "line" of 5ml or 2.5ml is highly inaccurate. A syringe is a more accurate way of taking water contents to be measured.
5ml of water is about 1/4 above the actual "line". You will get far more accurate readings using this method.