I found this while doing a Yahoo Search. I called a local Sand and Gravel supply company and the guy told me they carried sand in mesh sizes of 8, 16, 20, 30, and 70. This link then told me what it calculates to in the form of millimeters (mm).
The guy and the sand and gravel pit should be able to tell you the grain size in mm and inches. Its written on the sieve next to the sieve number. Typically you don't use the sieve number until you get down to the number 4.
Ok so I'm board at work
According to the USCS (Unified Soil Classification System)
3"_______ 76.20 mm
2"_______ 50.80 mm
1 1/2"____ 37.50 mm
1"_______ 25.00 mm
3/4"_____ 19.00 mm
1/2"_____ 12.70 mm
3/8"_____ 9.51 mm
1/4"_____ 6.35 mm
No 4______ 4.76 mm
No 10_____ 2.00 mm
No 20_____ 0.84 mm
No 40_____ 0.42 mm
No 80_____ 0.18 mm
No 100____ 0.15 mm
No 200_____ 0.07 mm
Gravel: Passing 3" but retained on the No. 4 sieve
Coarse Sand: Passing No. 4 but retained on No. 10
Medium Sand: passing No. 10 but retained on No. 40
Fine Sand: Passing No 40 but retained on No. 200
Silt particals are 0.074 to 0.005mm
Clays are smaller than 0.005mm
Were do you guy's buy onyx or tahitian moon sand? What color do they have? Does it change ph, gh or kh if you put it in the tank? Can i mix it with flourite gravel?
I know i have too many questions but i am planning to set-up my 20 high this thursday & want to put sand for a change.
Tahitian Moon Sand is inert and black. Onyx is a light grey. I have one tank with Onyx and will soon be switching to either Flourite or Eco-Complete.
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Related Threads
?
?
?
?
?
The Planted Tank Forum
3.5M posts
130.6K members
Since 2002
A forum community dedicated to Aquatic tank owners and enthusiasts. Come join the discussion about flora, fauna, health, housing, filters, care, classifieds, and more!