Joined: Nov 07, 2007 Posts: 2011 Location: Bangalore
Posted: Mon Aug 21, 2017 11:48 am Post subject: Re: Agricultural grade raw material for preparing nutrients
I use agricultural grade fertilizers, and I have not see any side effect. I have been using these since 2008. If you don't mind the additional cost then use lab grade.
This is not personal, but an observation that many simply reiterate something they have heard or read, but with no real basis...I may have said the same things before but now I believe different
People complain about Agricultural grade being impure, I doubt that even one of them has got anything tested in a lab to ascertain the purity and the contaminants. Even I haven't got anything tested. For me agricultural grade works. I find no point in spending more money for Lab grade stuff.
Joined: Jun 11, 2008 Posts: 3500 Location: Mumbai, Bharat (AKA...INDIA)
Posted: Wed Aug 23, 2017 3:20 pm Post subject: Re: Agricultural grade raw material for preparing nutrients
It all depends on the substrate you use. If you are using natural substrate eg garden mud, river sand then agricultural fertilisers can be used.
if you are using man made substrate then fertilisers are used as suplements.
Now lets say I have a combination of garden mud, river sand and river gravel- my tank is a 30 gallon tank. I have plants which can be easily grown with medium light then I will have excellent growth even without CO2.and NILfertilisers.Growth will be very good but algae will take over if fertilisers are added from top.
Now lets switch to the above combination with RED plants, high light, difficult range and if these plants are grown emersed by the seller, the plants will become green, leaves will have saturated growth, stems will be thin. So,obviously you will decide to add fertilisers. Here in this scenario it would be better to anticipate adding agriculture fertiliser while creating the substrate. If you add agriculture fertilisers in an established tank,you will have green water, algae, and unnecesary mulm.
In man made substrate, it would not be right to use agriculture fertilisers. It will simply react with the substrate and deteriorate it. Here you can use lab grade fertilisers in low concentration.But again if plants have been grown in emersed state it will differ growth rate.In man made substrate, red plants will show good results with suplemented fertiliser dosing. Mono Potassium phosphates + chelated iron + good pressurised co2 will give lovely results.
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