Do I have enough fertilized substrate? - The Planted Tank Forum
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post #1 of 3 (permalink) Old 02-06-2004, 04:34 PM Thread Starter
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I recently converted my 29 gallon tank to a 75 gallon and was curious if I have enough fertilized substrate:

I transferred the gravel from my 29 gallon which has been running for over a year. I don't remember how many lbs of gravel this is (about a 2.5-3" layer for a 29). Laterite was added to this gravel upon setup of the 29 (pack for 20gals from Aquarium Pharmeceuticals). I then added one 15lb bag of SeaChem Flourite and then an additional 20lbs of plain gravel.
I then tranferred and planted 10 mangroves and 3 Crypt ciliatas. I also have java moss and fern growing epiphytically on driftwood. I received my shipment of crypts yesterday from mailorder and planted them-6 Crypt cordatas and 2 Crypt griffithii. The new crypts look like they are going through the shock period as of this morning, so I hope they will recover soon and put up new leaves.

I just wanted to make sure that I do not need to add additional fertilizer like flourish tabs. I have seven fish currently in the tank and feed them twice a day with flake food. Gravel depth in the 75 is about 3".
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post #2 of 3 (permalink) Old 02-09-2004, 08:28 PM
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Hi robitreef,

Crypts can go through a period of adjustment and can look pretty sad for a small spell but they will come around. I had one do a complete melt down, I shrugged my shoulders in digust and never touched it, well wouldnt ya know it sprouted a couple leaves Crypts are funny that way, some never miss a beat and some...well... they just hate being messed with... :roll:
You have to just watch the plants to see if they need some more nutrients, there is no way to "test" the substrate other then with our eyes. I will say though that the crypts are heavy root feeders so if they seem to be stalling in growth or show weak growth then I would definately add some tabs. The laterite should do the trick but if you have stronger lighting on this tank it will put a larger demand on the nutrients and you may have to add some tabs, its all up to them... they will let ya know
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post #3 of 3 (permalink) Old 02-10-2004, 02:18 AM
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You can also landscape so that there is more substrate where there will be plants. So You can skimp on the gravel under driftwood and so forth..
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