PascalKrypt
Member
Recently I saw a video about a guy with a basement full of shrimp (sorry forgot who it was), who advocated using orchid fertiliser for his tanks.
I happen to have that around since I grow orchids and was wondering.. what do the experts on here have to say about that? Or has anyone perhaps ever tried it? I don't think I would risk tossing it at my shrimp, but how about a fish tank without inverts.
What is the verdict on common houseplant fertiliser actually? Will I overrun my tank with nitrogen and phosphorus even with a solid stocking/cycle? Any specific compounds to check the ingredients for that is toxic to fish?
Are the ratios of micro nutrients in these types of fertilisers significantly different than aquatic ones? I'm a little worried about poisoning the fish with trace elements.
And if I were to use either of these, I would love some dosing advice. Below lists of ingredients and proportions. Please excuse translation errors as there was no english version so I translated best I could.
Orchid fertiliser (unfortunately does not list micronutrients if any, it is a brand from a local shop)
I'm a little confused about dosage calculations. Does 3.5% N for example mean that 3.5% of the weight of the bottle consists of N-atoms (so should I calculate using molar mass and the total weight of the solution in the bottle) or does the 3.5% refer to something else (like volume, or is it a % of the dry weight of all the dissolved compounds taken together)?
Educate me senpai~
I happen to have that around since I grow orchids and was wondering.. what do the experts on here have to say about that? Or has anyone perhaps ever tried it? I don't think I would risk tossing it at my shrimp, but how about a fish tank without inverts.
What is the verdict on common houseplant fertiliser actually? Will I overrun my tank with nitrogen and phosphorus even with a solid stocking/cycle? Any specific compounds to check the ingredients for that is toxic to fish?
Are the ratios of micro nutrients in these types of fertilisers significantly different than aquatic ones? I'm a little worried about poisoning the fish with trace elements.
And if I were to use either of these, I would love some dosing advice. Below lists of ingredients and proportions. Please excuse translation errors as there was no english version so I translated best I could.
Orchid fertiliser (unfortunately does not list micronutrients if any, it is a brand from a local shop)
- NPK 3-1-5
- 3% N of which 2.4% "organically bound nitrogen from suspension of nitrogen fertilisers" (not sure what that entails tbh)
- 1% water soluble P2O5 and neutral ammoniacitrate
- 5% water soluble potassiumoxide (K2O)
- 23% organic compound (not specified)
- dosing advice for orchids 10ml/L once a week during period of active growth
- NPK 7-2-7
- 3.5% N divided as follows: 1.4% nitrate-N, 0.9% ammonium-N, 1.2% ureum-N
- 1% water soluble P2O5
- 3.5% water soluble potassiumoxide (K2O)
- 1% magnesiumoxide (MgO)
- Micronutrients (water soluble): 0.02% boron, 0.004% copper (is that a safe level?), 0.03% iron, 0.02% manganese, 0.002% molybdene (Mo), 0.004% zinq.
- dosing advice for houseplants 20ml/L once a week during period of active growth.
I'm a little confused about dosage calculations. Does 3.5% N for example mean that 3.5% of the weight of the bottle consists of N-atoms (so should I calculate using molar mass and the total weight of the solution in the bottle) or does the 3.5% refer to something else (like volume, or is it a % of the dry weight of all the dissolved compounds taken together)?
Educate me senpai~