Also thinking of getting these checkers cos having difficulty differentiating the shades of colours on normal test kits.
The cheapest I found was on eBay from seller "National Industrial Supply". Anyone with better lobangs? Thanks.
Bought a maxima yesterday. Guess what, it came attached with what looked like a baby clam on the shell. The 'mouth' actually opens and closes, except that the mantle is not clear.
Any idea if the baby clam will grow? :-)