morfin Posted April 18, 2014 Report Share Posted April 18, 2014 Hiya, I have a planted discus tank, with no Co2 or frets in it. Thing grow well, however after a certain height they go yellow and stop growing. There is 4 x t5 lighting on it, 300l. What frets could I use that won't upset my discus or other fish? I had heard that either excel or flourish don't go we'll with discus. I have ambulia, Anubias, hair grass and dwarf sag in the tank. And some thing else I don't know the name of. Any suggestions welcome Quote Link to comment Share on other sites More sharing options...
NoFishing Posted April 18, 2014 Report Share Posted April 18, 2014 I dose daily with both Excel and Flourish and my 'solo' Discus still smiles at me... saying feed me, feed me now. I dose a little over the recommended dosage for Excel and 1/7 of what ever the recommended weekly dosage of Flourish is. Hope that helps. Quote Link to comment Share on other sites More sharing options...
amtiskaw Posted April 18, 2014 Report Share Posted April 18, 2014 New growth goes yellow, old growth goes yellow, or both? Quote Link to comment Share on other sites More sharing options...
Morcs Posted April 18, 2014 Report Share Posted April 18, 2014 Yellow means a deficiency of nutrients. Flourish on its own isn't that beneficial. It contains extremely inadequate amounts of macro nutrients NPK. Look into getting some dry ferts. The other way to look at it is limiting factor. If nutrients are the limiting factor then reduce your lighting - cut your photo period to day 8hrs if its currently longer, and raise the height of the lights. I've personally always gone lower on my lighting as then levels of co2 and nutrients become less critical but at the expense of slower growth. Quote Link to comment Share on other sites More sharing options...
alanmin4304 Posted April 18, 2014 Report Share Posted April 18, 2014 Yellow leaves is normally a lack of nitrogen. I sounds like you have good light but poor ferts generally. To get good healthy growth you need a good balance of macro and micro fertilizers, A source of carbon and good light. It seems you may only have the latter. Quote Link to comment Share on other sites More sharing options...
morfin Posted April 19, 2014 Author Report Share Posted April 19, 2014 New growth goes yellow, old growth goes yellow, or both? New growth goes yellow. Old growth tends to just look sad. Quote Link to comment Share on other sites More sharing options...
amtiskaw Posted April 19, 2014 Report Share Posted April 19, 2014 Sounds like nitrate deficiency then. As others have said, you need macros (nitrate and phosphate) to complement your carbon and micros. Quote Link to comment Share on other sites More sharing options...
morfin Posted April 29, 2014 Author Report Share Posted April 29, 2014 Sounds like nitrate deficiency then. As others have said, you need macros (nitrate and phosphate) to complement your carbon and micros. Ok so based on that fabulous diagram it looks like the iron one. Te whole plant goes yellow (well that is what happened to my crypts and ambulia). So I got some fertiliser tabs to get me thru til I figure this whole fert dosing out - a science on its own! Which has caused a nice green tinge, although that has gotten under control within a couple of days. Will be very interested to see what happens. For those if us, or me, who aren't confident with calculating and buying and drop checkers and who were never good at science, is there a good all round fert tab for the substrate or is it a case of sucking it up and figuring the whole thing out? Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.