What is the diameter or these bio-balls?
634732
1 1/4" they work great. I purchased others and they were very small. I use them in my pond filter 7 months and in the fish tank 55 gallon filter for 5 months.
634733
They around 1 inch in diameter. Just a side note. Research these. We are having a nitrate problem and people have posted these bio balls may be the problem
1923316
Diameter is 1.5 inches (38mm). Almost exactly the size of a ping pong ball.
872178
They are much larger than a tennis ball. Probably close to the size of a basketball.
134386
Not sure exactly, but I can tell you that they are bigger than a baseball, and smaller than a softball. Hope that helps.
1043842
They are about 3/4 of an inch long and less than the diameter of a pencil. They are what I would consider the standard size capsule.
1071871
They are like real balls, but only about 5 inches in diameter. Great for 2-4 year old to play with.
1106338
They're 9mm, or about .35 inches. I use these to drink spinach-banana smoothies and have found them to be a great size for it!
1261386
They're about the size of a standard fiber capsule... about half an inch long and about 1/8th inch in diameter.
1970705
If I remember correctly, the ball was about 10" in diameter...maybe a bit more. It's a good size, like a soccer ball.
896049
They are a good size about 4-6in long. I don't have a ruler so it's a guess but good for playing and not small for choking hazard
1666540
I am not sure of the exact diameter, but they are skinny. My grand kids have played with them and they love them.
419648
they are 3" in diameter. not exactly slim, but not huge either. relatively rugged...
455514
they are about 2 inches in diameter (5cm) and about 3/4 of an inch tall (~2cm)
1495183
The balls are about 1.75" in diameter. The lights are soft i changed mine to led, cool white, but prefer the warm white really it depends in the size billsu usem the halogens that came with it are junk a few of them died within a wk
1484445
I'd say its about half the size of an actual tennis ball. I bought the small for our husky pup. He's much larger now but still loves it!
193381
I am not sure of the size of the balls. I had bought it for a friend in another state. Sorry!!
16377
I'd say they are larger than golf balls, the diameter was 2 1/2 inches I believe