Ph20 vent and cool slush dilemma

[Lilscratchy]

So I recently started on a map which to my delight has:

1 cool slush geyser and hydrogen vent near spawn. 

1 NG vent, Ph20 vent, and cool slush geyser less than 15 tiles apart from each other. 

I've gotten to building a large basin to collect the polluted water from these vents, as well as setting up a couple fertilizer synthesisers next to the NG vent, to power some NG generators and pumps for the Ph20 in a self powered system. 

My issue is as follows, I use some of the regular Ph20 as well as Ph20 from the NG generators to cool the fert. Synthesizers and generators. 

After this i ship the water off to a large basin for repurposing in the form of either filtration or growing plants or whatnot. 

Should I mix the Ph20 from cool slush geyser with the 30 to 40 degree Ph20 so that it isn't fed into my base all warm and stuff, or do I keep em separate. I have a little test set up and the ph20 has, after 30 or so cycles not gotten any warmer than 8 degrees despite the warmer ph20 being gathered in much higher quantities than the -10 ph20 from both cool slush geysers. Furthermore, on a map like volcanea I was surprised to find running this water around my base in regular pipes for slow cooling is... Overly effective as I have dupes constantly in a state of hypothermia. 

So, in short, is it wiser to separate cold ph20 from cool slush geysers and regular ph20 from ph20 vents and generators?  Or do I toss them in together? 

[Junksteel]

Keeping them together is fine as both of them don't have high temperatures and they won't cross the 30ºC threshold if the enviroment doesn't mess up. It's the easier and faster solution with no serious consequences. You can cool down or heat up any amount of the liquid later if you need a specific temperature for a given task. 

Having them separate will save you from the annoyance of cooling or warming any of your polluted water for specific needs. I'm lazy but I always try to keep stuff separate at some point. You'll be able to save some power and, most likely, your sanity in a longer term.

[Soulwind]

The biggest downside to mixing them (imo) is that your clean,  cold, ph2o from the slush geyser will then become contaminated with germs. 

Keep them separate and you have an easy source of clean, cold, h2o. Just put a temp sensor on a sieve, use the ph2o to cool something (I cool a nearby gold volcano and my main power plant) until it is above 1 degree (so it won't freeze upon cleaning), then send it to the sieve.

Then I use the clean water as my base cooler, water source, and for my berry farm

[crypticorb]

You can use the warm germy pH2O for sieving and putting into an electrolyzer, or many electrolyzers. Food poisoning (mostly) dies when electrolyzed, and can't get dupes sick via breathing anyways.

I would keep the cold pH2O for when you need coolant, such as for smelting iron/steel. I used my slush geyser reservoir, and smelting steel with it only bumped up the pH2O by about 60 degrees, well below boiling. After warming up the coolant, dump it wherever, or electrolize it.