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I can't find it! I thought it was APFUK but their downloadable one is in teaspoons.

Quick question - do mixed ferts go bad after time?

Is there any difference in nutrient uptake between plants grown under or above water (assuming the same light intensity)? I would assume that plants would take up nutrients faster out of water due to the higher CO2 content. Saying that, I can grow plants nicely out of water in nothing but a...

How much TPN should one use as a trace alongside EI Macros? I'm currently using 2ml/25l but I'm worried it might not be enough Tom

This is one of the last remaining problems in the Mini M I hope. Brand new leaves seem fine, but as soon as another sprouts, the older one goes brown around the edges, and it gradually covers the leaf. I'm seeing it in pretty much every plant, and have the same issue in the Do!aqua cube...

As per title really - What visual effect would excessive Excel have on plants? Would it cause a melt?

I've just got some Salts containing 17.4% MgSO4, 19.5% Citric Acid, and 22.6% Na Bicarb. First of all, is this Epsom Salts? I'm looking into it for the Mg as suggested in my journal, and I thought I might as well try it. Do the other ingredients matter or adversely affect anything? As far as I...

Hi, My maths is terrible and I tend to go blank when thinking about numbers. I'm trying to work out how much KH2PO4 to dose daily in my Mini M (approx 25l gross). Daily doses will be too small to use spoon measures, so I'd like to make a mix in a 250ml TPN bottle. Please could someone direct me...

Just got my bottle of aquaessentials' liquid carbon through the post. Good delivery time for second class, must say. Very good value too, half the price of Excel, and seemingly more concentrated. Anyone used it? I'm assuming it's exactly the same chemical?

Just something I've been wondering about really. Will an excess of trace elements cause algae? People only ever seem to mention the Macro nutrients vs. CO2 with regards to algae, so does that mean the dosing rates of Micros is less critical? Would you see deficiencies of NPK/CO2 related algae...

My M. Umbrosum has gone yellow and has brown algae over it just in the last couple of days and the leaves are melting. It hasn't grown since the first trim, however it was growing nicely before I trimmed and switched to TPN+ from TPN. My rocks are covered in brown and green algae. My R...

What would a lack of Potassium look like, just out of interest? Tom

Carrying on from a quick debate at the weekend that I don't think ever got resolved... Should you use both together or separately? Does TPN+ contain enough macros and micros, or should you use the combination? Tom

I'll be setting up my 2 footer in a month or two maybe, and will be using ADA substrates (Amazonia and Power Sand Special). Until it runs out, I'll also be dosing Brighty K, Step1, and Brighty Spec Lights. Once thats gone however, I want to break into my skipload of Tropica. I'm assuming the...

Following on from the discussion about brighty k (and making your own from Pot Carbonate), I am wondering if I can imitate all 3 ADA ferts I use with powders? Brighty K seems easy enough, but is it known about the concentrations of each substances in Step1 and Special Lights or have ADA kept it...