GHE pH Down - Please Help

Dunno if it helps but I boil my water then use it when it's cool never had a problem. My ph yoke broke too lol I save up the hot water bottle water 😂

no.. Use your tap water. If I tell you what I use that may be way out and turn your water to acid or be basically like tap water anyway so rather then gambling with your hard work.. Just use tap water until you can know for sure. Or if you can maybe find a grower on here who lives in your area and uses your water that might be good info otherwise it's just a gamble.