I want to run 4 tunze stream 6301 in my 480g 96x48x24 but i have a thin layer of sand on the bottom. The grain size between 2mm - 5mm. Do you think i will have a problem with sand storm? 
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How many 6301 do you have in stock?
What is the smallest fish i can have with that pump?
. How many 6301 do you have in stock?
What is the smallest fish i can have with that pump?
