4M Crystal Growing Experimental Kit | A Science and Chemistry Kit for Kids Ages 14+ | Grow your own Crystals

Toen het pakket binnen kwam, viel op dat de data op de zakjes bijna allemaal een jaar oud waren. We wisten dus niet of het zou werken. Instructies exact opgevolgd, zelfs met een digitale thermometer. Uiteindelijk de bakjes laten rusten op een stuk karton, bovenop een radiator (niet te heet). Na 3-4 dagen een mooi resultaat (zie foto's). Sommige kristallen voorzichtig met een pincet eruit gehaald, om breken te voorkomen.

First thing read the instruction. These do work best when using freshly boiled water, distrurb as little as possible, don't keep in a room too hot (as UK had recently) or too cold (how UK is 50 weeks of the year) I did two of these kits and one during heat wave didn't work as well. The crystal climbers it's best to take out rather than push back in. Make sure u don't ignore them as I left for 2 hours and they took over in the heat. When the crystals are to size drain the liquid don't wait for all the liquid to evaporate. Wear gloves when handling the crystals. Work out what colours you want before you start as the seed crystals come with just enough so big crystal is one pack, so don't use all one colour of want different shades or colours than white, red and blue. Or as my first one white, red, blue, purple and one was red,blue and pink. It's a great kit to do with kids but maybe have adult mix, handle and display and let kids watch then grow and in display case ( maybe tape the case or could drop on floor and break (yes I dropped few b4 taped them)

The crystals were a great success! The instructions are a little confusing but we made large, impressive crystals, despite making a mistake. The warnings are scary but it is good to see the product manufacturers take potential hazards seriously. The age range is appropriate but I would still suggest adult supervision.

Nice activity for kids. Worth buying.

This is a awesome product...these grew very nice a good size in only 7 days sitting by the TV. In the light not a lot of heat as it is winter and we are electric heat🤔. These are medium. They had a lot of growth crawling up the sides, the white rings did not help that fact. Do not break the growth off the edges on to the growing crystal. It just builds up and takes from the beauty. I did and had to clean it all out of the blue one with a toothpick. They are pretty with the sun shining on them. Do not dump the juice from these down the drain. Soak it up in paper towel bag it and toss it in the garbage. It will continue to grow in the dark in your drain. I read that in another review. I do recommend...