Biobizz Premix 5L

Initially, rated this 3 stars, for reasons explained below, then after using a bit, gave it 4. Now, having used this a while, am pretty sure it's contaminated with fungus gnat eggs - the little black flies that crawl over top of compost and fly up in a cloud when you knock the pot. I mix my own compost, and was previously using Biobizz worm humus in it, and had resigned myself to always having to treat for fungus gnat whenever I used fresh compost mix anywhere, the flies would always appear within a few days. Then, tried a different brand of worm humus, and not a fungus gnat in sight.. Now, since I've started using this, they're back. I did suspect the worm humus before, and once I changed it, was pretty sure, now am quite sure that it's an issue with Biobizz products - I've added nothing else new that could possibly contain the eggs, except this product. Am going to stop using this, except maybe for outdoors and older plants - fungus gnat larvae eat the roots of plants, and vector diseases, too.. This is what I wrote before finding the fungus gnats: Initially, found the smell weird and off-putting, but it smells better once you "dig into it", with the usual loamy, woody smell of composted plant matter (and I am used to the smell of organic fertiliser, btw, but on initial opening, this didn't smell "right"). The thing with all additives/fertilisers etc is that the only sure way to tell efficacy is by plant growth, and there are so many other factors that could be relevant, unless you want to do a controlled study, you really have to take on faith that any subjectively observed improvements (or not) are related to the product you've used. So, if you know what is in it, you can evaluate whether it's worth the price based on the ingredients (assuming you trust the info!). With this, there's no real way to know whether it's worth the price charged, as I said below, it could be anything, because most types of organic fertilisers can be processed or ground up, mixed etc, so the appearance changes.. I would think it's some mix of composted or otherwise processed plant or animal waste, with maybe some mineral additives or worm humus, or seaweed etc added. Initially, gave it 3 stars, as it looked like sieved compost, which is available at a lot lower prices. Was also put off as noticed it contains quite largish (compared to overall consistency) chunks of woody matter: sticks and lumps of what looks like bark chip or similar and also material that looks suspiciously like peat. I ordered this because it seemed reasonably priced for dry organic fertiliser, can be added to your own compost mix and is said to stimulate growth of microorganisms - which many organic fertilisers do... Biobizz don't usually provide a detailed ingredient list on their liquid fertilisers, or at least, I have never seen one, but usually, you at least have an idea what the main ingredient is.. Their bio-grow is molasses-based, or their fish-mix obviously fish-based, but with this, nothing, except mentioning that "rock powder is derived from Limestone". This also doesn't fill me with confidence - as far as I know, rockdust is volcanic, not just ordinary limestone, which doesn't contain all the micro-nutrients that are in rockdust, is a really cheap ingredient, and only adds calcium to the soil, once broken down, or raises the PH (am still a bit confused about the relationship between the 2, to be honest). Anyway, at this price, you'd think they could afford to use volcanic rockdust and not limestone. Then, as said above, what also put me off was the smell on opening: which I couldn't quite identify, but which reminded me a bit of animal urine, which would make sense, if this was composted manure.... If it is composted manure or composted green waste, then £11.55 for a 5 ltr bucket is very over-priced, considering you can get 50 ltr of good organic compost for less, even if there are a few additives, as you'd probably be better off buying those separately.. Compost is an organic fertiliser, of course, or can be used as such, but it's not what I expected to get as "dry organic fertiliser" - also, what you need to add to your own compost mixes depends on what ingredients you use. If it's peat-based, as Biobizz compost mixes are, then you might need to add compost, but if you already use compost and worm humus as ingredients, then it's unnecessary to add additional composted material. Of course, it might be something else entirely, for all I know, but that's the thing: I don't know. I don't understand why they wouldn't want to provide this info - although I can imagine the reasons they would give.. Unless this shows some amazing results, I don't think I'll be buying it again. Arrived very promptly from seller, though, and the seller has actually provided pretty much all the info that Biobizz provide: to mix this well into compost at rate of 3 - 5%, it's for all types of plants and all types of growing mediums, including re-using compost. It's NPK 3 - 3 - 5, for those interested..

I always Bio products for my garden, never has been disappointed and will carry on buying from this seller

(Returning customer) great products, great prices