I've only been using this product for about 2 weeks so I can't comment much upon the effects of the product on plant growth, but I can confirm that, in my small planted tank, it has had a dramatic effect on the hair algae. In a period of 2 weeks it has essentially eliminated what was quite a bad case of hair algae. Highly recommended by me!

This product is amazing. I've been keeping fish for years but always used plastic plants. I decided to buy a complete plant selection for my 375L discus tank but didn't really know much about them. After about 2 weeks some of them started turning yellow and developing holes and growth was not happening at all. I looked into getting a co2 system but for a tank this big it was extremely expensive and way more involved than I wanted to get into and then I came across this product. I bought Flourish and Flourish excel at Aqua Essentials and the results were amazing. All plants gradually returned to full vibrant colour and growth is unbelievable. My ferns and some other plants who's names I don't know, all started growing to the top of the tank within days. I cut about 3" off the top of my ferns and replanted them elsewhere in the tank and within 1 week they were all hitting the water surface. I couldn't recommend it more and at this point have no interest in setting up a big co2 system. If I could give it more than 5 stars I would.

Seachem's Flourish Excel is an interesting product. It supplies an organic carbon source for plants, a source that is lacking in tanks where no carbon dioxide is added. Since I have started using it on my non-CO2 tank, I have seen a great improvement in plant growth, all plants were given a boost and have started growing faster than they have been growing before, even the more demanding plants seem to enjoy this product and are now growing faster. Also, this product has an interesting side effect as many aquarists (me included) have reported that the algae in their tanks turned red and then died within weeks of using this product. I recommend this product for anyone who has a planted tank and don't/can't add CO2. It really does make a difference.