6.3 is not bad for over nite 90% keep hitting them with power.
You mite be ok I bet your real low sg was a bad reading .
hydrometer suck also I use 2 different ones morning star makes a good on that is Automatically temperature , and a diffrent model ?
I like the second one because it gives good readings ? the morning star not so much
all of this is not a exact science it’s more of a feeling , there is no perfect charge , its like Balancing on a razors edge
I change my setting weekly to match usage , power used every day and power in Rain time of year and weather forecast .
My controller in the pic is first thing in the morning 800 am I’m charging at 43 amps for my 430 ah battery I’m in bulk charge .
I’ve brought in 0.9 KWH so far .
The sun only hit the panels 30 mins ago
my controler will max out at 3700watts in settings I have the system set to a 50 amp max in put .
The thing is I’ll never see full out put power , I’m at 93% now , and in a hour or so I’ll go into absorb and then the controller
will start to limit power .
My 0.9 kwh will clime to 3.5 kWH then the absorb will limit power for the rest of the day buy the end of the day
my kwh will top at 5.2 +- this gives me the power used all day and a little extra over charge .
when the battery’s adsorb down to 500watts coming in I am charged . But I go a little lower some times then I hit foat
54v for 48 volt system This float voltage still adds power to the battery but I just leave it , my system is turned off when I leave so it dosent sit in float for day on end.