+1 You can cut the airline at an angle so it has a point. Put the point through the slightly smaller hole and use forceps or needle nose to pull it through. It will be very snug and with the added silicone for assurance, no leaks.
I thought about breeding SSS for complete white, but the problem is without genetic testing there is no way to tell the difference between snow white and SSSS
A seller once told me that he keeps a separate tank just for amanos cleaning up hair algae. He tosses in the plants and then takes them out when done. Don't feed the amanos in that tank.