a problem i'm having with machines that create multiple fluids: they often stop working with the message "output full" despite the fact that all outputs are connected to a tank that is unequivocably NOT full

EDIT: don't want to bump an old thread unnecessarily, but you're right. it's not that big a deal once i understood it. my main frustrations were being unable to fill tanks, and the tooltips not appearing (cause still unknown, hasn't happened since) so i'm honestly fine with the pressure system now. sorry for being melodramatic.

On the FAQ tab, the entry about pressure is relevant. Tier 1 production machines may have less than 100% pressure. Generally you can't count on completely filling a set of tanks unless you do it with a pump, or you're using higher tier machines and tier 4 pipe.

so this isn't a bug? i currently have an increasing field of tanks that each take less and less of the fluid (at this point about 5k per tank) before the machine is "full". i have to keep running around to flush system contents. this is worse than oil.

You start the game with some valves, outfalls, and chimneys. You can use these to help automate voiding. When the tank exceeds a certain threshold, then it will flow past the valve, and you can send the excess fluid to an outfall or chimney.

A pipe 1 supports 40% pressure, so it will fill a tank up to 40% pressure. You can fill it more with pumps. The valve you start out has a 25% threshold, so that works well with early game low pressure pipes.

oh THAT'S what those are for! okay this is Less Stupid.

i'd greatly prefer to be able to turn off this part of the mod and just have the default fluid system.

tbh i think part of the problem here is that nothing has information. not even the items you ported from the default game. so i have no idea what anything does because there's just no hoverinfo. am i going to have to keep going to outside sources to understand how this mod works?

There's tooltip information on everything. Perhaps you should check your settings to make sure you didn't turn it off.

Tooltip settings are under "Interface Settings". You should check whether you have "Show descriptions in tooltips" turned off.

huh. "show descriptions in tooltips" is on. indeed, i get tooltips in other saves. just not when playing with the nullius mod.

i DO see the tooltip info if i place an item on the ground and hover over it. it appears in the sidebar as it should. they're not showing anywhere except this overworld sidebar.

but if the mod is supposed to have tooltips in inventory/crafting/science then clearly something's wrong. i'll update if i find the cause.

update: i turned every mod off one by one, and then back on again, and tooltips are displaying correctly in inventory etc

i don't know why that helped - i was only doing it to figure out which one was the cause - but it works fine now, so?? that's one problem solved

definitely still want to turn off the "pressure" stuff and just have the default fluid handling. is that possible?

Use pumps to fill tanks. Read the FAQ entry on pressure which may make more sense to you now that you can see tooltips. It's not a huge deal once you understand it.

I don't think you've had a lot of time to mull over the gameplay implications of pressure since you've only been able to see what the pressure of pipes or tanks are for less than an hour. I'm sorry that happened to you with tooltips, but the mod doesn't do anything unusual with descriptions, so it's not Nullius doing anything weird. The only other time I've heard of someone having a similar issue, they had the option turned off.

Higher pressure allows tier 4 pipes to have much higher throughput than vanilla pipes. Each tier of pipe delivers more fluid than the last. The builtin Factorio fluid system has few parameters to work with to increase fluid throughput. The main way to reliably increase fluid throughput in the Factorio fluid simulation system is to increase fluid box height. Increasing the fluid box height has side effects which are explained in terms of pressure. Can't abandon pressure without abandoning the concept of different tiers of pipe, which would have lots of other effects.

The way the system behaves is quite predictable and not hard to work with. Now that you know what the pressure of different pipes and tanks is, it will make more sense why a 40% pressure pipe only half fills up an 85% pressure tank, or what level of that tank different valves will operate on. Valves also operate on different pressure levels, and the valves will be very important to handling fluid byproducts. Once you understand how to use them, valves give you a lot of power to control complex interactions between different processing producing or consuming the same fluid.