what can I do to fix hard water without gettting a reverse osmosis machine?

I think Ive finally figured out whats wrong with my plants. The bottom-most leaves are yellowing and falling off and some of the top leaves are getting brown spots and the tips are curled and burnt looking. Im pretty sure its not a nute problem because I have flushed twice since seeing the problems and Im following a water-water-feed routine and I only feed with a half strength nute solution since these plants seem to be very sensitive to nutrients. So ive come to the conclusion that its a PH problem or a hard water problem. My PH is at about 6.3 and im pretty sure the water is bad since im in a fairly old building in Mexico. So what should I do to fix this? Im ordering a PH up and ill try that first, but if thats not it, what should i do?

if ur ph is 6.3 u def dont need pH up dude lol thats high enough...too high for hydro, ok for a soil grow...you could just by distilled water, or if your not using great big amounts, boil the water first then cool it off in the fridge or somethin....how old are your plants? can you get any pics?

i have the exact same prob, not really a newbie either i use well water and check ph regularly im growing in soil ph is right where it is supposed to be i tried fox farm big bloom the other day still waitin on results and its mainly on my nute sensitive plants that this happens to using all fox farm ocean forest soil

I forgot to mention im doing soil. and from what ive read soil ph should be like 6.5 to 7.0. Is that right? My plants are about 6 weeks old total including seedling stage and im about to flower in a few days. I would have flowered sooner but I had to wait until i got my hps setup. Im using General hydroponic nutes- flora grow, bloom, and micro. Im gonna buy some flora micro hard water and see if that helps any. but can I give micro nutrients every time I water or is that overkill?

Now my little 2 week old seedlings are showing signs of yellowed and burnt looking leaves and I havent given them anything yet but water and superthrive (which is safe for seedlings and i never had a problem with it when I lived in Vancouver) So im pretty sure the water is fucked. and yesterday I noticed like shiny parts on the leaves and I looked closer and it looked like salt crystals. So im pretty sure the dissolved salts of the water are way too high and thats what is causing this. I would get a water analysis but im in fucking mexico and I have no clue where to get that done. Ill try to take some pics later today and put them up today too. Im so irritated by all of this because when I grew in canada i never had any problems like this. arggghhh!!

also I use a ton of water since my plants were just moved into 10 gallon containers and ive got over 50 plants. so buying distilled water will get costly and boiling water would be next to impossible with the amount of water i use. I hope the flora micro hard water works, cause if it doesnt it looks like ill have to invest in a water softener, reverse osmosis machine, or Ill just have to buy distilled water...

Definitely don't go for the water softener as that will leave higher levels of sodium in the water, not good for plants. You could always see if you can get your hands on an inexpensive, in-home water quality testing kit. These are sold at most hardware/home improvement stores. There are various types available, some more comprehensive than others but most appear to check for chlorine/chloramine, lead, copper, iron, pesticides, hardness, nitrates and even bacteria.

I use a ZeroWater (5-stage ion exchange) filter, which was very affordable and seems to work quite well. It even includes a TDS meter so that you'll know exactly when the filter needs to be replaced. This and other table-top water filtration systems work quite slowly, and you would need a large receptacle to continuously empty clean water into. This would not be an option for you if you've got 50 plants in 10 gallon buckets, unless you don't mind spending your whole day pouring water and waiting.

Continuously buying distilled water could also get pricey, fast. Even at .50 cents a gallon, assuming you only watered each plant with four gallons: it would cost $100. If you can afford it then I would get a reverse osmosis ASAP. Do a little research to find yourself one that is economical and meets your needs.

look on ebay for a ro filter. i just got a 150 gpd(gallons per day) ro setup for 144$ and that included shipping. but since you in mexico you might have to pay extra for shipping.