They have Viv pipes on Amazon for about ~50 dollars each (inflow/outflow) and you can use Prime if you have it to get free shipping. They also have some generic ones that are 50 for a set but only come in one size so you wont be able to have the 13 and 16 mm sizes..
You can also look at cal aqua labs pipes which are supposedly very nice. You can get them at green leaf aquariums but they are only about 50 dollars cheaper than what youd pay for ADA I think.
You can also look at cal aqua labs pipes which are supposedly very nice. You can get them at green leaf aquariums but they are only about 50 dollars cheaper than what youd pay for ADA I think.