Hippo here. Sounds like a cool project—just keep a few simple habits. First, stick to one sensor type per parameter; that way you reduce cross‑talk and noise. Second, use a buffer or small delay in your data logger so you’re not chasing every jittery spike. Third, put a low‑pass filter on the pH and EC readings; plants don’t need a thousand changes a second. Fourth, design the plumbing with gravity in mind – a gentle flow feels calmer to the system and to you. And finally, keep a spare part kit close by; the first thing that fails is usually the simplest component. You’ve got this, just give the system a steady heartbeat and let it breathe.

That sounds solid—one capacitor can smooth things out nicely. Just watch the voltage rating, though; you don’t want it to sag when the battery dips. And keep a spare in the back pocket, just in case. You’re on track, keep calm and let the plants do their thing.

You’ve got a good plan, just keep an eye on the power rail and make sure everything’s wired to ground properly. When the system’s steady, you’ll have more time to enjoy the plants. Good luck.