How much Prime?

hot water has low kH??

lower dissolved O2 I can buy into ..but low kH??
 
How do you monitor the temperature of the water coming into the tank through Python? I am really thinking about investing in one of these since my other gravel vac got stomped on and it leaks at the gravel cylinder.
 
I've been using hot water for over 20 yrs without issue.
 
To effectively treat your water with any water conditioner you need to know as much as possible about your water supplier. The City of Chicago, my supplier, increases chloramine, chlorine, and buffers due to certain weather conditions, more so in the winter. I double dose the replacement water only, at times triple, most tanks get filled with a hose, no matter if I'm doing a smaller 30% water change, or a larger 80%+ one. I'm another one that has been mixing hot & cold for years, never had a problem.

In the summer, especially during fair weather, the water runs through the system at a quicker rate, they go easy with the additives, and I can get by with plain sodium thiosulfate.

Seachem states that Prime can safely be used at up to 5x the normal dosing rate. This being the case a little extra won't hurt, and might be a good idea if you don't trust your supplier, or don't know much about how & why they do what they do.
 
I've always mixed hot and cold for my fish tanks. I've been having problems with a shrimp tank though. I was told that there could be toxic copper levels from copper pipes when the hot water is used - no problem though with cold. I've begun using only cold but just for that 1 tank - I use a big bowl of cold water and heat it in the microwave to warm up the water in the pail.
 
Do any of you use the hot water from the tap for your tanks which contain shrimp? Any problems with copper?
 
In the time it takes to adjust the temp, any copper issues are long gone. Only in extremely stagnant and little used household systems would it be an issue, and a simple quick flush, coming to temp, would remove those issues.
 
I agree with R Bishop on this one. Any time I use water for drinking or for fish I flush the lines for several seconds which basically gets anything that has been sitting in my copper pipes flushed out. That takes care of the copper and more important to me it takes care of any lead in the solder that was being used back when the house was built. My own repairs have all used lead free solder but I don't know about the pipes that I have never had to fix.
 
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