Yellow leaves..... PLEASE HELP!!!!!!!!

I read that i may have a salinity build up, lack of N, and possible chemical burn. Can someone please help me differentiate? We started with yellowing leaves on our flowering plants and now 75% of the leaves are yellow. I water them with distilled water and a tea of molasses, worm castings bat guano and sea weed extract once every 3 feedings and water twice every 3 feedings. I was going back and forth with my recipe trying to find a good tea. I thought it was heat so I bought an AC and now their at around 70 degrees but still yellow. So now i am thinking its salt build up(not sure what to do) or i have to much potassium causing little uptake of n.p. Last week I figured it was a nitrogen deficiency so i have been using seaweed extract and molasses with water only, for 2 waterings and haven't seen a change. So now i am thinking to much potassium causing little uptake of n.p. I dont wanna blindly keep trying different things cause I dont want to cause more problems.

Also on some of my clones the leaves look singed at the end. and some of these leaves are yellowing also.

Im freakin out so if anyone could help it would be greatly appreciated!!!!!!!!!!
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N def

You need to keep giving some N during flowering.

For indoor growing one of the best NPK ratios for veg is 3-1-2 and for flowering is 2-1-3 Notice the lower value for P in all these as the P is not leached out of your medium growing indoors like it is outdoors.

Get some of your grow nutes into her maybe a half dose and do this maybe every 2nd watering.

Help her green back up a little.

the ratio above i have learned from RIDDLEME this guy is really wise and always knows his shit.

Your plants will take a little time to bounce back you dont want to try too many things all at once.

Give her some grow nutes as mentioned above the chances are that those yellow leaves are gonna stay yellow and not recover but anything that is still green will remain green.

If you want any more advice about this search for RIDDLEME's post about the Over use of bloom nutes.

J