Great idea - i've often thought of this and really glad to see it made.<p>Some feedback:
1. Your website title is "GrowGuard - Welcome" perhaps change this to something more descriptive so that I and google will know that it's about being able to monitor your plants online as well as watering them the right amount.<p>2. The front page says "GrowGuard" as the h1. Perhaps add a tag line underneath that clearly explains the main and perhaps secondary benefits? Maybe something like "water your plant correctly" or "the easiest way to water your plant" or "the best way to correctly water your plant"<p>3. The buttons near the top "home, GrowGuard, etc" get a bit lost with the white space above them.<p>4. The home button doesn't take you home, it actually takes you to the medium kit.<p>5. The GrowGuard button takes you to the about page, but it's not clear that it will actually do that. perhaps have it say "about us"<p>6. The money back guarantee is a 3 month / 90 day guarantee. Perhaps just make it 90 days? A large percentage of the time 3 months is roughly 90 days and it lets you get rid of text on the page.<p>7. On the guarantee page, you say "So, what are you waiting for? Order GrowGuard today!" perhaps link the "Order GrowGuard today" to your order form so that people can click to it.<p>8. In the 3 benefits part of the page you have "GrowGuard: Keeps your plants from dying" twice with the same text beneath. Perhaps split the "GrowGuard: Keeps your plants from dying" into two separate benefits? This way you have less text on the page and you can show better benefits.<p>9. In your about us page, you mention pachube.com. When I tried to go to the website it is now <a href="https://cosm.com/" rel="nofollow">https://cosm.com/</a>. Perhaps it's worth rewriting this as well as putting in a link so that I can click on it directly.<p>10. I see that the plug looks European. Perhaps somewhere on the page put what countries/regions are currently available and which are not.<p>11. More pictures of plants! =)<p>12. Give me a sense of why I want to water plants correctly... Perhaps if I'm growing herbs tell me the yield will be 25% more if I water them correctly. That helps me understand the main benefit.<p>Overall great work. Also - you might think about selling your device on <a href="https://tindie.com/" rel="nofollow">https://tindie.com/</a><p>Good luck!
As a developer and sole founder, I would love to have your feedback on the GrowGuard. Some background: Last Januari, I decided to quite my job and do what I love most (HW hacking and startup), now after a few months of developing and getting production ready, I open up to the public here on HN.<p>Love to hear your feedback, Hans.