Some links on this page are to Amazon UK. If you buy through them, Plant Light Guide may earn a commission. This does not change the price you pay. Affiliate disclosure.

Affiliate disclosure

Some links on Plant Light Guide go to Amazon UK. They use the affiliate tag `jfnichesites-21`. If you buy through one of those links, Amazon may pay this site a commission. You do not pay a higher price because of that.

That is the only affiliate arrangement in use on this site. Links to the RHS, Ofgem, timeanddate, Hydroponics Guide, Tilthwick, Plankley and Breezewold are ordinary references. They are not affiliate links.

Product pages are linked so you can read the current listing. Specifications quoted here are the maker's statements, dated on the page that quotes them. We have not tested the kit. A link is not a ranking, and the shortlist is organised by fitting and by stated spec, not by commission.

The disclosure above also appears once near the top of each page. We do not repeat it as a label on every product.

Amazon Associates participation does not change the advice to prefer daylight, to follow the maker's distance chart, or to skip a lamp you do not need. Those points are in do I need a grow light this winter.