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hi, can you send me a picture of the control box?thanks
hi, can you send a picture for the control box?thanks
hi, may i ask what kind of bottle did you use? Is it 1 litter?
how long should the pvc pipes be?
is there a replacement material for the body?
can i have a step by step instruction on how to make one
the submarine seems not sinking and is there any replacement for the pvc material?
does water interfere with the signal?