As mentioned earlier, the growth across the board was very slow after day three. For week two, we moved the plants to a west-facing windowsill to give them a natural light cycle. Natural light seemed to do the trick. The plants grew at a slightly quicker rate and there was no burning, curling or rotting, as we saw with the grow light.
By week two, the leek and the green onions were fully grown and ready to harvest but the romaine was still too small to harvest. It was then repotted from water into a soil medium and kept moist to see if this would change the growth rate. By the end of week three, it had grown only another inch or so.
Although grow lights can be effective, you may need to adjust your light settings to determine the ideal light intensity and duration for optimum growth and set a timer to ensure consistency. If you don't have space for grow lights or just not really digging the idea, we recommend putting your plants near a brightly lit window. South, east or even west-facing windows tend to receive more direct light than north-facing windows, which receive the weakest light and, most likely, won't be sufficient.
If something doesn't look or smell right, throw it out immediately and don't consume it. Be vigilant in watching your new growth daily and monitor any changes you see.
At the end of the day, there are no garden experts only garden problem solvers. Each project has a unique growing environment with unique needs and struggles. If you are struggling or something isn’t growing “correctly,” simply try a new method or experiment with growing conditions, such as lighting, watering, growing medium, temperature, or humidity. Don’t be afraid to fail. Part of the fun of home gardening is learning to enjoy the process and learning something new each time.