Sugar leafs yellow and black/rust dot not sure Flowering outdoors

Hello guys! I had never been on forums before so everything new here. I like to thanks on advance if anyone can give me a lil help.
I don't know if my plant have a nutrient burn/lock or deficiency. And this it's because my plants have never look dark green shiny look like before nutrient burn. Also other people says they need nitrogen because turning yellow even then I'm not sure yet because the leaf start turning yellow long time ago from de edges working the way in. Plus not burn just yellow and the full yellow and that's it. Upper fan and sugar leaf same but then turning pink and this very last stage some dots black or rust not sure. I haven't done nothing because I don't have ph meter to check the soil or even the water coz I don't have ph drops to checked. Its tap water but use few 50 gallon barrels that I let sit for 3 days for can be clean.
In total I do have 6 plants the 3 bigger ones are blue dream and the other 3 also blue dream cross with tangie way to short I did not like those 3.
I only have problem with the 3 taller one the they are blue dream maybe just because they start Flowering earlier the blue / tangie.
Please help me out what looks like ??? What I can do???
Thanks again much appreciated!

To really help you, we would need pictures.

My bad. I do have poor wifi connection. by way I live in Humboldt. Some pictures you can see my plants have been always light green but also they do have tips yellow so hard to decide I'm about to give 20-20-20 again I switch to maxisea bloom into flowering whitch is 3-20-20 Thank you also I use liquid Karma, calmag, silica. Chicken shit on the hole dolamite I forget this year to use bone meal and my soil its royal king made in Humboldt.