In my opinion, the best root tabs are Seachem Flourish. I also use Seachem Flourish Comprehensive Supplement as a liquid fertiliser.
NannaLou has answered the sand question - Argos play sand. Play sand does tend to be dusty so it needs a good wash.
Superfish data is tricky to find as it's on the website of the parent company, Aquadistri. The info is in various pdfs which have to downloaded to view. They include one for aquariums and one for lighting.
The Superfish Start 100 has a retrofit Bright LED. According to the lighting pdf this has
which is not suitable for plants, I'm afraid. But they do make two other LED tubes - Colour, with a K rating of 5990 and Combi with a K rating of 7680. @Byron should be able to tell you which is the better replacement.
Edit to add screenshot from the lighting pdf
NannaLou has answered the sand question - Argos play sand. Play sand does tend to be dusty so it needs a good wash.
Superfish data is tricky to find as it's on the website of the parent company, Aquadistri. The info is in various pdfs which have to downloaded to view. They include one for aquariums and one for lighting.
SuperFish | Everything You Need For Smart Fishkeeping | Aquadistri
Aquariums, filters, heating, lighting, decorations and more accessories. At SuperFish our goal is to make sure your aquarium or pond hobby is successful.
aquadistri.com
The Superfish Start 100 has a retrofit Bright LED. According to the lighting pdf this has
10290 Lux
167 Par
12390 Kelvin
which is not suitable for plants, I'm afraid. But they do make two other LED tubes - Colour, with a K rating of 5990 and Combi with a K rating of 7680. @Byron should be able to tell you which is the better replacement.
Edit to add screenshot from the lighting pdf
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