Ther's a RailCraft Tank inside. I should have used the same kind of tank design for Methane but I feel exhausted enough to skip re-engineering the whole methane pool into a spheroid gas storage.
Hydrogen gas sphere was also missing some GT Pipes to return empty cells (now added after it soon blocked both towers).
Notes for Gregg:
The most disappointing part of this setup is: Despite essentially dealing with fluids, there where no use for GT Fluid Pipes because distillation towers are dumb single devices, thus can't input-output multiple fluids in fluid form. So every material has to be handled in cells or dust items. (See my suggestions about enhancing the Distillation Tower with hatches, condensers, exhaust as a revamped multi-block structure.
Sulfuric acid lack a fluid registry entry and can not be stored in a tank. It has only one bare use as single use battery. It should be able to be used in rechargeable lead acid batteries, ore processing or a very efficient desiccating agent.
I electrolyze it for more hydrogen but it output yet more sulfur. Ores processing gave me so much sulfur already. I get so much sulfur with so little use I may cover our entire map with it ;D
Based on a rough analysis of a Gregtech world, a Minecraft planet consists of:
2% Other Materials