Testers
Most of the common brand for freshwater isn't very accurate. You can use it but as a rough guide. Most of the people here uses AP. It has ranges of 0, 5, 10, 15,.... and its cheap.
PH
===
Get a digital (test pen) version for this. This is important. Spend money here.
KH
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Use AP's KH and GH tester (comes together in one box). Cheap and effective. Sera is okay too (KH only). With AP's KH and GH, you don't need Ca tester.
P
==
None is accurate.
K
==
Lammott if you have money to burn. But seriously, you don't need them.
Fe
==
This is the worst element to test for. There is no reliable test kit. Save your money for the rainy day.
Cheerio,
Sleepy_lancs
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An afternoon trimming my watery garden is better
then an afternoon with a therapist
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