Each bottle has a Lot # printed on the bottle. The last four digits are the month and year they were manufactured.

Last 3 years
Ammonia
High Range pH
Nitrate
GH

Last 4 years
Nitrite
KH

Last 5 years
pH

Shortly after I posted the video at this thread

http://www.houstonfishbox.com/vforum...iphon-overflow.

I received a question from another Box'er asking how much flow a 1-inch siphon utube can handle. I already had all my stuff in the driveway, so I ran a test. Here is video showing the test.

Here is the answer. When a siphon is setup, the siphon will seek a balance (equal water height) on...

This page includes some of the most used calculators and conversion tools....

Here are a few options:

1. Collect rainwater after its rained a bit (unless you fear pollution in your area or have a new roof). It's free and naturally soft and usually a bit acidic. Mix with a little tap water and you should have what you want;
2. Buy RO water and mix with a little tap water and you will have ideal water;
3. Buy high quality peat that the manufacturer lists as having a low pH value (check the bag -- usually only large bags say this - or call the company to check the acidity).

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