Display MoreIt didn't work.
Funnels don't exist.
I tried an output hatch, I made a hopper and tried putting water in it.
Sluice doesn't exist.
Nothing will put water in to this machine.I think I found this issue however:
A decompiled and modified version of GT 5.07.07 approved by GregoriusT.This is a special modpack set which I think I need to jump through some other hoop prior.
Unless anyone can think of other ways to get water moving somehow
I'm not sure why you tried to use a hopper with an output hatch. You can put the bucket in manually (after opening the output hatch gui) and the water should go into the ore washing plant (provided the output hatch has been wrenched to point towards the ore washer). Alternatively, since you seem to have a BuildCraft tank there, you could use a buildcraft wooden pipe with a redstone engine and lever to get it into buildcraft pipes and use those to get the water into the machine (though personally I think you might be better off using a buildcraft pump than trying to use buckets). If you specify what mods are in the modpack (or at least the name of the modpack, so I can try to find its modlist), I might be able to offer additional options for getting water into the machine.