I usually go to my local nursery, home depot, walmart or lowes. Sometimes all of those places to get everything I need. It's your garden, be bold!

You live, you learn then you teach others. Thanks Bert... It really is :)

This is a Great question! You don't necessarily need to switch formulas when your plants start blooming and fruiting. Masterblend is actually well-suited for the full cycle on tomatoes and peppers. What I do adjust is the EC (electrical conductivity) — bumping it up slightly during heavy fruiting to give the plants a bit more to work with. As for switching brands mid-grow, yes, you can switch as long as the NPK ratios and micronutrient profiles are comparable. Just make sure you flush your system well before transitioning so you're not mixing residual nutrients with the new formula in ways you can't calculate. Consistency is more about maintaining your target nutrient ratios than brand loyalty. One thing worth noting for hydro specifically: Masterblend is a 3-part system (the 4-18-38, calcium nitrate, and Epsom salt), so if you're not already using all three parts together, that could make a bigger difference than any formula switch. The ratios matter a lot in a soilless system where the plants are 100% dependent on what you feed them.

Yay!! It looks great! Sorry about the LIVE, youtube was trying to demonetize me... things have gotten weird. Beth is not far from the truth. I'm so excited to see the progress!

@Gillian El Deeb OMG I am soooo glad to see this! My life has been insane, crazy, hectic, so I am really gad that Beth has been here to communicate with you about your tower. Keep us updated!