<span class="link_user">@BeMedicated</span>,i'm using 4 lamps normals of 20W LEDS, the Idea about This growth its to be the cheapest and smaller possible, thanks for the question
<span class="link_user">@TheBelgian</span>, Thankyou :) funny you say that, I was thinking about that earlier. But I don't think it has a huge impact. Those 3 did only get around 0.2l tapwater each or less at the beginning of this second week. that little bit of water is warmed up fast enough with the sun I think:)