Gravel Vaccum
I will get a proquatics gravel vaccum for my homemade pump. They have 3 sizes small, medium and large. The medium is 10 by 2, the large is like 16 by 2, the small is I can’t rember. I am about 6.7 to 7 bp by 4.5 to 4.7 in girth. Which tube should I get.