diff --git a/examples/parameter_example.yml b/examples/parameter_example.yml
index 03b2b1ac52e083ac4ec7ad852dc9a95d5320b61f..efbd105bdea21c2dfd88d7a6bce7a97099e37f44 100644
--- a/examples/parameter_example.yml
+++ b/examples/parameter_example.yml
@@ -302,6 +302,9 @@ SchayeSF:
   MetDep_SFthresh_Slope:            -0.64   # (optional) Scaling of the critical density with the metallicity (not used for Schaye2004=0)
   thresh_MaxPhysDensOn:             0       # (optional) Default is 0.
   thresh_MaxOverDens_HpCM3:         1e5     # (optional) Density at which the SF law changes
+  EOS_Jeans_GammaEffective:         1.33333 # (optional) The polytropic index
+  EOS_Jeans_PressureNorm:           1e3     # (optional) No idea how this works
+  EOS_JEANS_den0:                   .1      # (optional) No idea what the value is.
 
 # Structure finding options (requires velociraptor)
 StructureFinding:
diff --git a/src/runner.c b/src/runner.c
index baa23990912764e14561b37000ee95ab32f66f43..7006cc0aad8928779add0c2478f9d63e90c8b9f3 100644
--- a/src/runner.c
+++ b/src/runner.c
@@ -496,6 +496,7 @@ void runner_do_star_formation(struct runner *r, struct cell *c, int timer) {
         // THIS IS A VERY WEAK SEED, WE NEED TO IMPROVE THIS
         testseed = p->id + timer;
         if (starformation_potential_to_become_star(starform, p, xp, constants, cosmo) ) {
+          message("Found particle that can form star!");
           starformation_convert_to_gas(starform, p, xp, cosmo, testseed);
         }
         // MATTHIEU: Temporary star-formation law
diff --git a/src/starformation/schaye08/starformation.h b/src/starformation/schaye08/starformation.h
index 38cad651226d7c5b8b78a5fb7162fb1e6351f996..63f5692231ce9a21b5a6a29d180edd963d47528b 100644
--- a/src/starformation/schaye08/starformation.h
+++ b/src/starformation/schaye08/starformation.h
@@ -96,6 +96,14 @@ struct star_formation {
   /*! Metallicity dependent critical density from Schaye (2004) */
   int schaye04;
   
+  /*! Polytropic index */
+  double polytropic_index;
+
+  /*! EOS pressure norm */
+  double EOS_pressure_norm;
+
+  /*! EOS density norm */
+  double EOS_den0;
 };
 
 /*
@@ -136,7 +144,7 @@ INLINE static int starformation_potential_to_become_star(
     /* Check if it exceeded the maximum density */
     if (p->rho > starform->den_crit_max) {
       /* double tempp = cooling_get_temperature() */
-      tempp = 1e4;
+      tempp = 5e3;
       /* Check the last criteria, if the temperature is satisfied */
       if (tempp < starform->T_crit) {
         return 1;
@@ -151,7 +159,7 @@ INLINE static int starformation_potential_to_become_star(
       double den_crit_current = starform->den_crit * pow(Z/starform->Z0, starform->n_Z0);
       if (p->rho > den_crit_current) {
         /* double tempp = cooling_get_temperature() */
-        tempp = 1e4;
+        tempp = 5e3;
         /* Check the last criteria, if the temperature is satisfied */
         if (tempp < starform->T_crit) {
           return 1;
@@ -184,7 +192,8 @@ INLINE static void starformation_convert_to_gas(
     ){
 
   /* Get the pressure */
-  const double pressure = hydro_get_physical_pressure(p, cosmo);
+  const double pressure = starform->EOS_pressure_norm 
+  * pow(p->rho/starform->EOS_den0, starform->polytropic_index);
 
   /* Calculate the propability of forming a star */ 
   const double prop = starform->SF_normalization * pow(pressure,
@@ -195,6 +204,7 @@ INLINE static void starformation_convert_to_gas(
 
   /* Calculate if we form a star */
   if (prop > randomnumber) {
+    /* How to implement the convert_part_to_spart */
     message("Create a STAR!!");
   }
 }
@@ -387,6 +397,15 @@ INLINE static void starformation_init_backend(
   /* !!!DONT FORGET TO DO THE CORRECT UNIT CONVERSION!!!*/
   starform->den_crit_star = starform->den_crit / pow(starform->Z0,
   starform->n_Z0) * conversion_numb_density;
+
+  /* Load the equation of state for this model */
+  starform->polytropic_index = parser_get_param_double(
+  parameter_file, "SchayeSF:EOS_Jeans_GammaEffective");
+  starform->EOS_pressure_norm = parser_get_param_double(
+  parameter_file, "SchayeSF:EOS_Jeans_PressureNorm");
+  starform->EOS_den0 = parser_get_param_double(
+  parameter_file, "SchayeSF:EOS_JEANS_den0");
+  
 }
 
 /* @brief Prints the used parameters of the star formation law